prison, penitentiary, house of correction, penal institution, correctional facility, goal, cell, carcel, cage, guardhouse, guardroom, brig, pound, reformatory, stockade, detention camp, concentration camp, penal settlement, penal colony, house of detention, dungeon, bastille, oubliette, bridewell, debtor's prison, sponging house, slammer*, cooler*, lockup*, stir*, pen*, clink*, jug*, can*, big house*, black hole*, tank*, hulks*, limbo*, death house*, pokey*, calaboose*, coop*, hoosegow*. *

Some well-known jails and prison camps include: Sing Sing, Devils' Island, Attica, San Quentin, Leavenworth, Alcatraz or the Rock*, Dartmoor or the Moor*, Newgate, Bridewell, Tower of London, Fleet, Marshalsea, Wormwood Scrubs, Holloway, Dannemora, Broadmoor, the Bastille, Belsen, Botany Bay, Andaman Islands.

confine, imprison, lock up, incarcerate, sentence, throw into the dungeon, impound, detain, put behind bars, jug*, put in the clink*, throw in stir*, throw away the keys*, send up the river*; see also imprison.

Antonyms liberate*, discharge*, let out.