The act of engaging, pledging, enlisting, occupying, or entering into contest.
- The act of engaging or the state of being engaged.
- Something that serves to engage; a pledge.
- A promise or agreement to be at a particular place at a particular time.
- Employment, especially for a specified time.
- A specific, often limited, period of employment.
- A hostile encounter; a battle.
- The condition of being in gear.