penitentiary

a place of confinement for persons held in lawful custody a sentence in the state penitentiary for robbery Synonyms bastille, big house [slang], bridewell, brig, calaboose, can, clink [slang], cooler, coop, guardroom, hock, hold, hoosegow, jailhouse, joint [slang], jug, lockup, nick [British slang], pen, jail, pokey [slang], prison, quod [British slang], slam, slammer, stir [slang], stockade, tolbooth [Scottish]Related Words bull pen, cage, cell, hole, tank; block, ward; glasshouse [British], guardhouse, hulk(s); concentration camp, gulag, labor camp, prison camp, stalag, work camp; dungeon, keep, oubliette; reformatory, reform school, training schoolNear Antonyms outside