personal trainer

noun

plural personal trainers

: a person specializing and often certified in guiding or instructing people in fitness and exercise routines

She swims nearly every day, does step aerobics with a personal trainer, and uses a treadmill when it rains …

—Patricia McLaughlin

… swims a half-mile several times a week and also lifts weights with a personal trainer.

—Kevin Helliker

Word History

First Known Use

1983, in the meaning defined above