A place or institution for the confinement of persons held against their will in lawful custody or detention, especially (in US usage) a place where people are held 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.
Confinement in a jail.
A kind of sandbox for running a guest operating system instance.
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.
A building for the porter(s) near the gate of a castle, college, etc., (historical) formerly used as a place of punishment for the staff.
An equivalent room near the gate of a college, chiefly used as a mailroom.