Wearing trainers.

A person who trains another; a coach. / (sports) A person responsible for treating injuries sustained by players during matches; a physiotherapist. / (Britain) A running shoe or sneaker.

plural of trainer

Someone employed to help another with their fitness, especially by means of a personalised diet program and exercise regime.

plural of personal trainer

An elliptical trainer.

plural of cross-trainer

(aviation, historical) Any of a series of early electromechanical flight simulators

plural of X-trainer

Short for cross-trainer.