stockade Synonyms

keep captive wall reformatory redoubt rampart prison pound penitentiary pen parapet palisade bastille jailhouse slammer Detention Center fortifications detention camp Walls picket fence correctional facility hold hostage hoosegow concentration camp penal institution paling oubliette lockup clink cell can cage bulwark brig bridewell blockhouse barrier barricade cooler coop corral keep jail guardroom guardhouse gaol fortification fort fence enclosure dungeon