Definition of: trainer

(trā′nər) noun
1. One who trains.
2. One who directs and superintends a course of physical training, or who supervises the physical condition of members of an athletic team.
3. An apparatus or device used in training: a Link trainer.
4. One who trains a cannon; specifically, in the U. S. Navy, the member of the gun's crew who gives direction to the gun.
5. One who trains animals for shows, contests, animal acts, etc.