Words related to train

tract (n.1)
"area," mid-15c., "period or lapse of time," from Latin tractus "track, course, space, duration," lit, "a drawing out or pulling," from stem of trahere "to pull, draw," from PIE root *tragh- "to draw, drag, move" (source also of Slovenian trag "trace, track," Middle Irish tragud "ebb;" perhaps with a variant form *dhragh-; see drag (v.)). The meaning "stretch of land or water" is first recorded 1550s. Specific U.S. sense of "plot of land for development" is recorded from 1912; tract housing attested from 1953.
retrain (v.)

also re-train, "train again, teach (someone already skilled or trained) a new skill," 1905, from re- "back, again" + train (v.). Related: Retrained; retraining.

trainable (adj.)
1540s, from train (v.) + -able.
trainee (n.)
1841, from train (v.) in the "instruct" sense + -ee.
trainer (n.)
c. 1600, "one who educates or instructs," agent noun from train (v.). Meaning "one who prepares another for feats requiring physical fitness" is from 1823, originally of horse-trainers.
training (n.)

mid-15c., "protraction, delay," verbal noun from train (v.). From 1540s as "discipline and instruction to develop powers or skills;" 1786 as "exercise to improve bodily vigor." Training wheels as an attachment to a bicycle is from 1953.

Training is the development of the mind or character or both, or some faculty, at some length, by exercise, as a soldier is trained or drilled. Discipline is essentially the same as training, but more severe. [Century Dictionary]
untrained (adj.)
1540s, from un- (1) "not" + past participle of train (v.).
entrain (v.1)
"to draw along," 1560s, a term in chemistry, from French entrainer (12c.), from en- "away" (see en- (1)) + trainer "to drag" (see train (n.)). Related: Entrained; entrainment.
entrain (v.2)
"get on board a locomotive train," 1860s, from en- (1) "in, into" + train (n.). Related: Entrained.
train-spotting (n.)
1959 (train spotter attested from 1958), chiefly British English, in reference to the hobby of recording the numbers of railway locomotives one has observed; from train (n.) in the railroad sense + verbal noun from spot (v.).