Definition of: train

(trān) noun
1. Anything drawn out to a length, or any series of things drawn along.
2. A continuous line of coupled railway cars.
3. A series, succession, or set of connected things; a sequence; especially, an assemblage of people or objects drawn up processionally or in orderly disposition.
4. A retinue or body of retainers; suite.
5. Something pulled along with and in the track of another.
6. An extension of a dress skirt, trailing behind the wearer.
7. Proper order; due course.
8. Mech. A series of parts acting upon each other, as for transmitting motion: also called drive train, power train.
9. Mil. a The variation of the axis of a gun in a horizontal plane, b Collectively, the men, animals, and vehicles attached to a military body for the transportation of its ammunition, supplies, etc.
10. A succession or line of wagons and pack animals en route.
11. A line of gunpowder or other combustible laid to conduct fire to a charge, mine, or the like. See synonyms under PROCESSION.
—v.t.
1. To bring to a requisite standard, as of conduct or skill, by protracted and careful instruction; specifically, to mold the character of; educate; instruct: sometimes with up.
2. To render skilful or proficient, as a mechanic or soldier.
3. To make obedient to orders or capable of performing tricks, as an animal.
4. To bring into a required physical condition by means of a course of diet and exercise: to train a man for a boat race.
5. To lead into taking a particular course; develop into a fixed shape: to train a plant on a trellis.
6. To put or point in an exact direction; bring to bear; aim, as a cannon.
7. Obs. To mislead; entice.
8. Obs. To draw along; trail.
—v.i.
9. To undergo a course of training.
10. To give a course of training; drill. See synonyms under LEARN, SUBDUE, TEACH. [Fusion of OF traïne a dragging and traïn a series, procession, both <traïner, trahiner draw <L trahere]
—train′·a·ble adjective
—train′less adjective
Train may appear as a combining form in hyphemes or solidemes, or as the first element in two–word phrases, with the meaning of definition 2: