Engage (verb)

1. Be involved in an activity or occupation.
2. Occupy oneself in an activity or task.
3. To participate in an activity or task.
4. To be employed in an activity or task.
5. To be involved in an activity or occupation.

Origin:

Late middle english (in the senses "enter into a contest" and "enter into battle"): from old french engagier, based on latin in- "in" + gageare "to pledge".

Examples:

1. He engaged in business.
2. She engaged in gardening.
3. They engaged in a game.
4. I will engage in some reading.
5. He engaged in a debate.