used before a singular noun to mean one of a group, when it is not a particular one
From this reading A dull sound in the rear caused him to push on again very quickly, for he believed Sam had found it necessary to discharge his weapons.
afterprepositionUS /ˈæftər/
later than; following
From this reading THE PURSUIT When Fred left Sam to defend the breach in the wall he fully realized the necessity of giving the alarm quickly, and did not stop to light his lamp until after scrambling over the barrier of coal.
anew
From this reading A dull sound in the rear caused him to push on again very quickly, for he believed Sam had found it necessary to discharge his weapons.
fear resulting from the awareness of danger
From this reading THE PURSUIT When Fred left Sam to defend the breach in the wall he fully realized the necessity of giving the alarm quickly, and did not stop to light his lamp until after scrambling over the barrier of coal.
used to join words or parts of a sentence that go together
From this reading THE PURSUIT When Fred left Sam to defend the breach in the wall he fully realized the necessity of giving the alarm quickly, and did not stop to light his lamp until after scrambling over the barrier of coal.
clearly revealed to the mind or the senses or judgment
From this reading "I'll get a pretty heavy dose if they catch me," he muttered, hurrying once more, and when the journey was half finished it became apparent that the pursuers were gaining upon him.
in or near a particular place or position
From this reading Once this had been done he ran at his best pace, guided by the wooden tracks on which the cars were hauled, until he was obliged to halt from sheer lack of breath.
barriernounUS /ˈbæriər/
a structure or object that impedes free movement
From this reading THE PURSUIT When Fred left Sam to defend the breach in the wall he fully realized the necessity of giving the alarm quickly, and did not stop to light his lamp until after scrambling over the barrier of coal.
inflected form of “become” — enter or assume a certain state or condition
From this reading "I'll get a pretty heavy dose if they catch me," he muttered, hurrying once more, and when the journey was half finished it became apparent that the pursuers were gaining upon him.
beenauxiliary verbUS /bɪn/
the past participle of “be”
From this reading Once this had been done he ran at his best pace, guided by the wooden tracks on which the cars were hauled, until he was obliged to halt from sheer lack of breath.
past form of “believe” — accept as true; take to be true
From this reading A dull sound in the rear caused him to push on again very quickly, for he believed Sam had found it necessary to discharge his weapons.
the supreme effort one can make
From this reading Once this had been done he ran at his best pace, guided by the wooden tracks on which the cars were hauled, until he was obliged to halt from sheer lack of breath.
breachverbUS /briːtʃ/
act in disregard of laws, rules, contracts, or promises
From this reading THE PURSUIT When Fred left Sam to defend the breach in the wall he fully realized the necessity of giving the alarm quickly, and did not stop to light his lamp until after scrambling over the barrier of coal.
the process of taking in and expelling air during breathing
From this reading Once this had been done he ran at his best pace, guided by the wooden tracks on which the cars were hauled, until he was obliged to halt from sheer lack of breath.
used to introduce something that contrasts with what came before
From this reading On making the second halt a few moments later, he detected a certain scurrying noise which at first he fancied might have been caused by the rats; but immediately came the voice of a man, and he knew the rioters were pursuing him.
showing who or what does the action
From this reading Once this had been done he ran at his best pace, guided by the wooden tracks on which the cars were hauled, until he was obliged to halt from sheer lack of breath.
inflected form of “come” — move toward, travel toward something or somebody or approach something or somebody
From this reading On making the second halt a few moments later, he detected a certain scurrying noise which at first he fancied might have been caused by the rats; but immediately came the voice of a man, and he knew the rioters were pursuing him.
carsnounUS /kɑːrz/
plural of “car” — a motor vehicle with four wheels; usually propelled by an internal combustion engine
From this reading Once this had been done he ran at his best pace, guided by the wooden tracks on which the cars were hauled, until he was obliged to halt from sheer lack of breath.
discover or come upon accidentally, suddenly, or unexpectedly; catch somebody doing something or in a certain state
From this reading "I'll get a pretty heavy dose if they catch me," he muttered, hurrying once more, and when the journey was half finished it became apparent that the pursuers were gaining upon him.
past form of “cause” — give rise to; cause to happen or occur, not always intentionally
From this reading A dull sound in the rear caused him to push on again very quickly, for he believed Sam had found it necessary to discharge his weapons.
definite but not specified or identified
From this reading On making the second halt a few moments later, he detected a certain scurrying noise which at first he fancied might have been caused by the rats; but immediately came the voice of a man, and he knew the rioters were pursuing him.
coalnounUS /koʊl/
fossil fuel consisting of carbonized vegetable matter deposited in the Carboniferous period
From this reading THE PURSUIT When Fred left Sam to defend the breach in the wall he fully realized the necessity of giving the alarm quickly, and did not stop to light his lamp until after scrambling over the barrier of coal.
argue or speak in defense of
From this reading THE PURSUIT When Fred left Sam to defend the breach in the wall he fully realized the necessity of giving the alarm quickly, and did not stop to light his lamp until after scrambling over the barrier of coal.
detectedadjectiveUS /dɪˈtektəd/
perceived or discerned
From this reading On making the second halt a few moments later, he detected a certain scurrying noise which at first he fancied might have been caused by the rats; but immediately came the voice of a man, and he knew the rioters were pursuing him.
didauxiliary verbUS /dɪd/
the past form of “do”, used in questions and negatives
From this reading THE PURSUIT When Fred left Sam to defend the breach in the wall he fully realized the necessity of giving the alarm quickly, and did not stop to light his lamp until after scrambling over the barrier of coal.
dischargeverbUS /dɪsˈtʃɑːrdʒ/
complete or carry out
From this reading A dull sound in the rear caused him to push on again very quickly, for he believed Sam had found it necessary to discharge his weapons.
having finished or arrived at completion
From this reading Once this had been done he ran at his best pace, guided by the wooden tracks on which the cars were hauled, until he was obliged to halt from sheer lack of breath.
dosenounUS /doʊs/
a measured portion of medicine taken at any one time
From this reading "I'll get a pretty heavy dose if they catch me," he muttered, hurrying once more, and when the journey was half finished it became apparent that the pursuers were gaining upon him.
lacking in liveliness or animation
From this reading A dull sound in the rear caused him to push on again very quickly, for he believed Sam had found it necessary to discharge his weapons.
formed or conceived by the imagination
From this reading On making the second halt a few moments later, he detected a certain scurrying noise which at first he fancied might have been caused by the rats; but immediately came the voice of a man, and he knew the rioters were pursuing him.
a quantifier that can be used with count nouns and is often preceded by “a”; a small but indefinite number
From this reading On making the second halt a few moments later, he detected a certain scurrying noise which at first he fancied might have been caused by the rats; but immediately came the voice of a man, and he knew the rioters were pursuing him.
(of materials or goods) brought to the desired final state
From this reading "I'll get a pretty heavy dose if they catch me," he muttered, hurrying once more, and when the journey was half finished it became apparent that the pursuers were gaining upon him.
firstadjectiveUS /fɜːrst/
preceding all others in time or space or degree
From this reading On making the second halt a few moments later, he detected a certain scurrying noise which at first he fancied might have been caused by the rats; but immediately came the voice of a man, and he knew the rioters were pursuing him.
intended to be given to, or used by, somebody
From this reading A dull sound in the rear caused him to push on again very quickly, for he believed Sam had found it necessary to discharge his weapons.
set up or found
From this reading A dull sound in the rear caused him to push on again very quickly, for he believed Sam had found it necessary to discharge his weapons.
Fred
Dictionary entry pending editorial verification. Tap Listen to hear the word.
From this reading THE PURSUIT When Fred left Sam to defend the breach in the wall he fully realized the necessity of giving the alarm quickly, and did not stop to light his lamp until after scrambling over the barrier of coal.
showing where something starts, or who sent it
From this reading Once this had been done he ran at his best pace, guided by the wooden tracks on which the cars were hauled, until he was obliged to halt from sheer lack of breath.
to the greatest degree or extent; completely or entirely; (“full” in this sense is used as a combining form)
From this reading THE PURSUIT When Fred left Sam to defend the breach in the wall he fully realized the necessity of giving the alarm quickly, and did not stop to light his lamp until after scrambling over the barrier of coal.
gainingverbUS /ˈɡeɪnɪŋ/
-ing form of “gain” — obtain
From this reading "I'll get a pretty heavy dose if they catch me," he muttered, hurrying once more, and when the journey was half finished it became apparent that the pursuers were gaining upon him.
come into the possession of something concrete or abstract
From this reading "I'll get a pretty heavy dose if they catch me," he muttered, hurrying once more, and when the journey was half finished it became apparent that the pursuers were gaining upon him.
the act of giving
From this reading THE PURSUIT When Fred left Sam to defend the breach in the wall he fully realized the necessity of giving the alarm quickly, and did not stop to light his lamp until after scrambling over the barrier of coal.
guidedadjectiveUS /ˈɡaɪdəd/
subject to guidance or control especially after launching
From this reading Once this had been done he ran at his best pace, guided by the wooden tracks on which the cars were hauled, until he was obliged to halt from sheer lack of breath.
hadauxiliary verbUS /hæd/
the past form of “have”, used to form the past perfect
From this reading Once this had been done he ran at his best pace, guided by the wooden tracks on which the cars were hauled, until he was obliged to halt from sheer lack of breath.
consisting of one of two equivalent parts in value or quantity
From this reading "I'll get a pretty heavy dose if they catch me," he muttered, hurrying once more, and when the journey was half finished it became apparent that the pursuers were gaining upon him.
haltverbUS /hɔːlt/
cause to stop
From this reading Once this had been done he ran at his best pace, guided by the wooden tracks on which the cars were hauled, until he was obliged to halt from sheer lack of breath.
hauledverbUS /hɔːld/
past form of “haul” — draw slowly or heavily
From this reading Once this had been done he ran at his best pace, guided by the wooden tracks on which the cars were hauled, until he was obliged to halt from sheer lack of breath.
haveauxiliary verbUS /hæv/
used with a past participle to form the perfect tenses
From this reading On making the second halt a few moments later, he detected a certain scurrying noise which at first he fancied might have been caused by the rats; but immediately came the voice of a man, and he knew the rioters were pursuing him.
a man, boy, or male animal already mentioned, as the subject
From this reading THE PURSUIT When Fred left Sam to defend the breach in the wall he fully realized the necessity of giving the alarm quickly, and did not stop to light his lamp until after scrambling over the barrier of coal.
of comparatively great physical weight or density
From this reading "I'll get a pretty heavy dose if they catch me," he muttered, hurrying once more, and when the journey was half finished it became apparent that the pursuers were gaining upon him.
the male already mentioned, as the object of a verb or preposition
From this reading A dull sound in the rear caused him to push on again very quickly, for he believed Sam had found it necessary to discharge his weapons.
belonging to a man, boy, or male animal already mentioned
From this reading THE PURSUIT When Fred left Sam to defend the breach in the wall he fully realized the necessity of giving the alarm quickly, and did not stop to light his lamp until after scrambling over the barrier of coal.
hurryingadjectiveUS /ˈhɜːriɪŋ/
moving with great haste
From this reading "I'll get a pretty heavy dose if they catch me," he muttered, hurrying once more, and when the journey was half finished it became apparent that the pursuers were gaining upon him.
I'll
Dictionary entry pending editorial verification. Tap Listen to hear the word.
From this reading "I'll get a pretty heavy dose if they catch me," he muttered, hurrying once more, and when the journey was half finished it became apparent that the pursuers were gaining upon him.
on condition that; in the event that
From this reading "I'll get a pretty heavy dose if they catch me," he muttered, hurrying once more, and when the journey was half finished it became apparent that the pursuers were gaining upon him.
without delay or hesitation; with no time intervening
From this reading On making the second halt a few moments later, he detected a certain scurrying noise which at first he fancied might have been caused by the rats; but immediately came the voice of a man, and he knew the rioters were pursuing him.
inside something, or within a place, period, or state
From this reading THE PURSUIT When Fred left Sam to defend the breach in the wall he fully realized the necessity of giving the alarm quickly, and did not stop to light his lamp until after scrambling over the barrier of coal.
a thing, animal, or idea already mentioned
From this reading A dull sound in the rear caused him to push on again very quickly, for he believed Sam had found it necessary to discharge his weapons.
undertake a journey or trip
From this reading "I'll get a pretty heavy dose if they catch me," he muttered, hurrying once more, and when the journey was half finished it became apparent that the pursuers were gaining upon him.
inflected form of “know” — be cognizant or aware of a fact or a specific piece of information; possess knowledge or information about
From this reading On making the second halt a few moments later, he detected a certain scurrying noise which at first he fancied might have been caused by the rats; but immediately came the voice of a man, and he knew the rioters were pursuing him.
the state of needing something that is absent or unavailable
From this reading Once this had been done he ran at his best pace, guided by the wooden tracks on which the cars were hauled, until he was obliged to halt from sheer lack of breath.
an artificial source of visible illumination
From this reading THE PURSUIT When Fred left Sam to defend the breach in the wall he fully realized the necessity of giving the alarm quickly, and did not stop to light his lamp until after scrambling over the barrier of coal.
happening at a time subsequent to a reference time
From this reading On making the second halt a few moments later, he detected a certain scurrying noise which at first he fancied might have been caused by the rats; but immediately came the voice of a man, and he knew the rioters were pursuing him.
location near or direction toward the left side; i.e. the side to the north when a person or object faces east
From this reading THE PURSUIT When Fred left Sam to defend the breach in the wall he fully realized the necessity of giving the alarm quickly, and did not stop to light his lamp until after scrambling over the barrier of coal.
of comparatively little physical weight or density
From this reading THE PURSUIT When Fred left Sam to defend the breach in the wall he fully realized the necessity of giving the alarm quickly, and did not stop to light his lamp until after scrambling over the barrier of coal.
the act that results in something coming to be
From this reading On making the second halt a few moments later, he detected a certain scurrying noise which at first he fancied might have been caused by the rats; but immediately came the voice of a man, and he knew the rioters were pursuing him.
an adult person who is male (as opposed to a woman)
From this reading On making the second halt a few moments later, he detected a certain scurrying noise which at first he fancied might have been caused by the rats; but immediately came the voice of a man, and he knew the rioters were pursuing him.
the person speaking, as the object of a verb or preposition
From this reading "I'll get a pretty heavy dose if they catch me," he muttered, hurrying once more, and when the journey was half finished it became apparent that the pursuers were gaining upon him.
used to say something is possible but not certain
From this reading On making the second halt a few moments later, he detected a certain scurrying noise which at first he fancied might have been caused by the rats; but immediately came the voice of a man, and he knew the rioters were pursuing him.
plural of “moment” — a particular point in time
From this reading On making the second halt a few moments later, he detected a certain scurrying noise which at first he fancied might have been caused by the rats; but immediately came the voice of a man, and he knew the rioters were pursuing him.
(comparative of “much” used with mass nouns) a quantifier meaning greater in size or amount or extent or degree
From this reading "I'll get a pretty heavy dose if they catch me," he muttered, hurrying once more, and when the journey was half finished it became apparent that the pursuers were gaining upon him.
past form of “mutter” — talk indistinctly; usually in a low voice
From this reading "I'll get a pretty heavy dose if they catch me," he muttered, hurrying once more, and when the journey was half finished it became apparent that the pursuers were gaining upon him.
absolutely essential
From this reading A dull sound in the rear caused him to push on again very quickly, for he believed Sam had found it necessary to discharge his weapons.
the condition of being essential or indispensable
From this reading THE PURSUIT When Fred left Sam to defend the breach in the wall he fully realized the necessity of giving the alarm quickly, and did not stop to light his lamp until after scrambling over the barrier of coal.
sound of any kind (especially unintelligible or dissonant sound)
From this reading On making the second halt a few moments later, he detected a certain scurrying noise which at first he fancied might have been caused by the rats; but immediately came the voice of a man, and he knew the rioters were pursuing him.
used to make a word, phrase, or sentence negative
From this reading THE PURSUIT When Fred left Sam to defend the breach in the wall he fully realized the necessity of giving the alarm quickly, and did not stop to light his lamp until after scrambling over the barrier of coal.
under a moral obligation to do something
From this reading Once this had been done he ran at his best pace, guided by the wooden tracks on which the cars were hauled, until he was obliged to halt from sheer lack of breath.
belonging to, or connected with, somebody or something
From this reading THE PURSUIT When Fred left Sam to defend the breach in the wall he fully realized the necessity of giving the alarm quickly, and did not stop to light his lamp until after scrambling over the barrier of coal.
touching and supported by a surface
From this reading Once this had been done he ran at his best pace, guided by the wooden tracks on which the cars were hauled, until he was obliged to halt from sheer lack of breath.
on one occasion
From this reading Once this had been done he ran at his best pace, guided by the wooden tracks on which the cars were hauled, until he was obliged to halt from sheer lack of breath.
overprepositionUS /ˈoʊvər/
above and across; more than
From this reading THE PURSUIT When Fred left Sam to defend the breach in the wall he fully realized the necessity of giving the alarm quickly, and did not stop to light his lamp until after scrambling over the barrier of coal.
the rate of moving (especially walking or running)
From this reading Once this had been done he ran at his best pace, guided by the wooden tracks on which the cars were hauled, until he was obliged to halt from sheer lack of breath.
pleasing by delicacy or grace; not imposing
From this reading "I'll get a pretty heavy dose if they catch me," he muttered, hurrying once more, and when the journey was half finished it became apparent that the pursuers were gaining upon him.
pursuersnounUS /pərˈsuːərz/
plural of “pursuer” — a person who is pursuing and trying to overtake or capture
From this reading "I'll get a pretty heavy dose if they catch me," he muttered, hurrying once more, and when the journey was half finished it became apparent that the pursuers were gaining upon him.
pursuingadjectiveUS /pərˈsuːɪŋ/
following in order to overtake or capture or as accompaniment to such pursuit
From this reading On making the second halt a few moments later, he detected a certain scurrying noise which at first he fancied might have been caused by the rats; but immediately came the voice of a man, and he knew the rioters were pursuing him.
the act of pursuing in an effort to overtake or capture
From this reading THE PURSUIT When Fred left Sam to defend the breach in the wall he fully realized the necessity of giving the alarm quickly, and did not stop to light his lamp until after scrambling over the barrier of coal.
pushverbUS /pʊʃ/
move with force
From this reading A dull sound in the rear caused him to push on again very quickly, for he believed Sam had found it necessary to discharge his weapons.
with speed
From this reading THE PURSUIT When Fred left Sam to defend the breach in the wall he fully realized the necessity of giving the alarm quickly, and did not stop to light his lamp until after scrambling over the barrier of coal.
inflected form of “run” — move fast by using one's feet, with one foot off the ground at any given time
From this reading Once this had been done he ran at his best pace, guided by the wooden tracks on which the cars were hauled, until he was obliged to halt from sheer lack of breath.
ratsnounUS /ræts/
plural of “rat” — any of various long-tailed rodents similar to but larger than a mouse
From this reading On making the second halt a few moments later, he detected a certain scurrying noise which at first he fancied might have been caused by the rats; but immediately came the voice of a man, and he knew the rioters were pursuing him.
successfully completed or brought to an end
From this reading THE PURSUIT When Fred left Sam to defend the breach in the wall he fully realized the necessity of giving the alarm quickly, and did not stop to light his lamp until after scrambling over the barrier of coal.
the back of a military formation or procession
From this reading A dull sound in the rear caused him to push on again very quickly, for he believed Sam had found it necessary to discharge his weapons.
riotersnounUS /ˈraɪətərz/
plural of “rioter” — troublemaker who participates in a violent disturbance of the peace; someone who rises up against the constituted authority
From this reading On making the second halt a few moments later, he detected a certain scurrying noise which at first he fancied might have been caused by the rats; but immediately came the voice of a man, and he knew the rioters were pursuing him.
a guided missile fired from land or shipboard against an airborne target
From this reading THE PURSUIT When Fred left Sam to defend the breach in the wall he fully realized the necessity of giving the alarm quickly, and did not stop to light his lamp until after scrambling over the barrier of coal.
scramblingverbUS /ˈskræmbəlɪŋ/
-ing form of “scramble” — to move hurriedly
From this reading THE PURSUIT When Fred left Sam to defend the breach in the wall he fully realized the necessity of giving the alarm quickly, and did not stop to light his lamp until after scrambling over the barrier of coal.
scurryingadjectiveUS /ˈskɜːriɪŋ/
moving with great haste
From this reading On making the second halt a few moments later, he detected a certain scurrying noise which at first he fancied might have been caused by the rats; but immediately came the voice of a man, and he knew the rioters were pursuing him.
1/60 of a minute; the basic unit of time adopted under the Systeme International d'Unites
From this reading On making the second halt a few moments later, he detected a certain scurrying noise which at first he fancied might have been caused by the rats; but immediately came the voice of a man, and he knew the rioters were pursuing him.
sheeradjectiveUS /ʃɪr/
complete and without restriction or qualification; sometimes used informally as intensifiers
From this reading Once this had been done he ran at his best pace, guided by the wooden tracks on which the cars were hauled, until he was obliged to halt from sheer lack of breath.
the particular auditory effect produced by a given cause
From this reading A dull sound in the rear caused him to push on again very quickly, for he believed Sam had found it necessary to discharge his weapons.
come to a halt, stop moving
From this reading THE PURSUIT When Fred left Sam to defend the breach in the wall he fully realized the necessity of giving the alarm quickly, and did not stop to light his lamp until after scrambling over the barrier of coal.
used to introduce what somebody said, thought, or felt
From this reading "I'll get a pretty heavy dose if they catch me," he muttered, hurrying once more, and when the journey was half finished it became apparent that the pursuers were gaining upon him.
used before a noun that is already known, already mentioned, or the only one of its kind
From this reading THE PURSUIT When Fred left Sam to defend the breach in the wall he fully realized the necessity of giving the alarm quickly, and did not stop to light his lamp until after scrambling over the barrier of coal.
the people, animals, or things already mentioned, as the subject
From this reading "I'll get a pretty heavy dose if they catch me," he muttered, hurrying once more, and when the journey was half finished it became apparent that the pursuers were gaining upon him.
used for a person or thing that is near, or that has just been mentioned
From this reading Once this had been done he ran at his best pace, guided by the wooden tracks on which the cars were hauled, until he was obliged to halt from sheer lack of breath.
used before the base form of a verb to make the infinitive
From this reading THE PURSUIT When Fred left Sam to defend the breach in the wall he fully realized the necessity of giving the alarm quickly, and did not stop to light his lamp until after scrambling over the barrier of coal.
tracksnounUS /træks/
plural of “track” — a line or route along which something travels or moves
From this reading Once this had been done he ran at his best pace, guided by the wooden tracks on which the cars were hauled, until he was obliged to halt from sheer lack of breath.
untilprepositionUS /ənˈtɪl/
up to a particular time
From this reading THE PURSUIT When Fred left Sam to defend the breach in the wall he fully realized the necessity of giving the alarm quickly, and did not stop to light his lamp until after scrambling over the barrier of coal.
uponprepositionUS /əˈpɑːn/
a formal word for “on”
From this reading "I'll get a pretty heavy dose if they catch me," he muttered, hurrying once more, and when the journey was half finished it became apparent that the pursuers were gaining upon him.
precisely as stated
From this reading A dull sound in the rear caused him to push on again very quickly, for he believed Sam had found it necessary to discharge his weapons.
the distinctive quality or pitch or condition of a person's speech
From this reading On making the second halt a few moments later, he detected a certain scurrying noise which at first he fancied might have been caused by the rats; but immediately came the voice of a man, and he knew the rioters were pursuing him.
an architectural partition with a height and length greater than its thickness; used to divide or enclose an area or to support another structure
From this reading THE PURSUIT When Fred left Sam to defend the breach in the wall he fully realized the necessity of giving the alarm quickly, and did not stop to light his lamp until after scrambling over the barrier of coal.
wasauxiliary verbUS /wɑːz/
the past form of “be” used with I, he, she, it, or a singular noun
From this reading Once this had been done he ran at his best pace, guided by the wooden tracks on which the cars were hauled, until he was obliged to halt from sheer lack of breath.
weaponsnounUS /ˈwepənz/
plural of “weapon” — any instrument or instrumentality used in fighting or hunting
From this reading A dull sound in the rear caused him to push on again very quickly, for he believed Sam had found it necessary to discharge his weapons.
wereauxiliary verbUS /wɜːr/
the past form of “be” used with you, we, they, or a plural noun
From this reading Once this had been done he ran at his best pace, guided by the wooden tracks on which the cars were hauled, until he was obliged to halt from sheer lack of breath.
at the time that
From this reading THE PURSUIT When Fred left Sam to defend the breach in the wall he fully realized the necessity of giving the alarm quickly, and did not stop to light his lamp until after scrambling over the barrier of coal.
used to introduce a clause giving more about a thing just mentioned
From this reading Once this had been done he ran at his best pace, guided by the wooden tracks on which the cars were hauled, until he was obliged to halt from sheer lack of breath.
made or consisting of (entirely or in part) or employing wood
From this reading Once this had been done he ran at his best pace, guided by the wooden tracks on which the cars were hauled, until he was obliged to halt from sheer lack of breath.