noun

1. TRAIN, wheelwork consisting of a connected set of rotating gears by which force is transmitted or motion or torque is changed
2. TRAIN, public transport provided by a line of railway cars coupled together and drawn by a locomotive
3. TRAIN, piece of cloth forming the long back section of a gown that is drawn along the floor
4. TRAIN, a series of consequences wrought by an event
5. TRAIN, a procession (of wagons or mules or camels) traveling together in single file
6. TRAIN, a sequentially ordered set of things or events or ideas in which each successive member is related to the preceding
7. TRAIN, to teach (someone) the skills needed to do something (such as a job) : to give instruction to (someone)
8. TRAIN, to be taught the skills needed to do something (such as a job)
9. TRAIN, to cause (someone or something) to develop an ability or skill

verb

1. TRAIN, exercise in order to prepare for an event or competition
2. TRAIN, undergo training or instruction in preparation for a particular role, function, or profession
3. TRAIN, create by training and teaching
4. TRAIN, teach and supervise (someone); act as a trainer or coach (to), as in sports
5. TRAIN, point or cause to go (blows, weapons, or objects such as photographic equipment) towards
6. TRAIN, drag loosely along a surface; allow to sweep the ground
7. TRAIN, travel by rail or train
8. TRAIN, educate for a future role or function
9. TRAIN, teach or refine to be discriminative in taste or judgment
10. TRAIN, cause to grow in a certain way by tying and pruning it
11. TRAIN, develop (a child's or animal's) behavior by instruction and practice; especially to teach self-control

1. He was never formally trained as a chef.
2. I've been trained in first aid.
3. I'm training her to take over my job when I retire.