What is the meaning of Trainer?

A person who trains another; a coach.

A person responsible for treating injuries sustained by players during matches; a physiotherapist.

A running shoe or sneaker.

A patch for a video game that applies cheats.

A piece of indoor equipment allowing a bicycle to be ridden while stationary.

attributive form of trainers

trainer

coach

post-1990 spelling of traîner

to drag

trainer

Source: wiktionary.org