A group of exercisers.
The definition of an exerciser is a person who exercises or something used to exercise.
An example of an exerciser is a person who is lifting weights.
- one who exercises
- any of various types of apparatus used for exercising, as an exercycle
- One that exercises: an exerciser of racehorses.
- A device for exercising the body.
- A person who exercises
- Any of many devices for use in exercising the body