What is the meaning of Exercise?

Any activity designed to develop or hone a skill or ability.

Activity intended to improve physical, or sometimes mental, strength and fitness.

A setting in action or practicing; employment in the proper mode of activity; exertion; application; use.

The performance of an office, ceremony, or duty.

That which gives practice; a trial; a test.

To exert for the sake of training or improvement; to practice in order to develop.

To perform physical activity for health or training.

To use (a right, an option, etc.); to put into practice.

To occupy the attention and effort of; to task; to tax, especially in a painful or vexatious manner; harass; to vex; to worry or make anxious.

To set in action; to cause to act, move, or make exertion; to give employment to.

Source: wiktionary.org