- (uncountable) Confinement in a jail.
- A place or institution for the confinement of persons held in lawful custody or detention, especially for minor offenses or with reference to some future judicial proceeding.
- In dodgeball and related games, the area where players who have been struck by the ball are confined.
- (horse racing) The condition created by the requirement that a horse claimed in a claiming race not be run at another track for some period of time (usually 30 days).
- To imprison.