(n.) A building which is occupied by the guard, and in which soldiers are confined for misconduct; hence, a lock-up.

POW camp bastille black hole borstal borstal institution bridewell brig cell concentration camp condemned cell death cell death house death row detention camp federal prison forced-labor camp gaol 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