gun firing chamber chamber

hyperbaric chamber sepulcher pneumatic caisson gun chamber enclosure sepulture cylinder firing chamber bomb shelter caisson cavity resonator fireroom camera obscura resonating chamber sepulchre resonator piston chamber bombproof steam chest air lock air-raid shelter cofferdam stokehold airlock stuffing box core stokehole tokamak packing box furnace burial chamber particle detector vacuum chamber

bodily cavity heart ventricle cavity atrium cavum ventricle

room divan diwan

house domiciliate put up

assembly

bed sleeping accommodation child's room dormitory guestroom dwelling house habitation hotel room domicile dwelling sleeping room bedroom motel room boudoir abode bedchamber master bedroom room dorm room home dormitory room

antiaircraft gun gun chamber air gun spring gun ack-ack gun action mechanism gun trigger pom-pom cartridge clip barrel firing chamber weapon system flack set gun piece whaling gun magazine gunsight firing mechanism gunlock air rifle cartridge remover airgun ejector cannon cartridge holder safety lock flak breechloader gun barrel extractor muzzle gun-sight trigger safety catch gunstock gun muzzle action minute gun clip ack-ack antiaircraft small-arm Quaker gun cartridge ejector firearm gas gun weapon stock cartridge extractor arm

armament ordnance battery heavy weapon four-pounder gunstock field gun artillery stock field artillery cannon

firing firing off discharge