(n.) The room occupied by the guard during its term of duty; also, a room where prisoners are confined.

POW camp bastille black hole borstal borstal institution bridewell calaboose can cell clink concentration camp condemned cell cooler death cell death house death row detention camp federal prison forced-labor camp gaol guardhouse guardroom house of correction house of detention industrial school internment camp jail jailhouse keep labor camp lockup maximum-security prison minimum-security prison oubliette pen penal colony penal institution penal settlement penitentiary prison prison camp prisonhouse reform school reformatory sponging house state prison stockade the hole tollbooth training school