exerciser

A person who exercises. / Any of many devices for use in exercising the body.

Japanese Meaning

運動する人 / 運動用の器具

The new exerciser at the gym asked for advice on how to use the rowing machine.

ジムで新しく運動を始めた人がローイングマシンの使い方についてアドバイスを求めた。

Sense（1）

A person who exercises.

Sense（2）

Any of many devices for use in exercising the body.

exercisers

（ plural ）