a retired room, esp. an upper room used for sleeping; a bedroom; as, the house had four chambers.-apartments in a lodging house.-a hall, as where a king gives audience, or a deliberative body or assembly meets; as, presence chamber; senate chamber.-a legislative or judicial body; an assembly; a society or association; as, the chamber of deputies; the chamber of commerce.-a compartment or cell; an inclosed space or cavity; as, the chamber of a canal lock; the chamber of a furnace; the chamber of the eye.-a room or rooms where a lawyer transacts business; a room or rooms where a judge transacts such official business as may be done out of court.-a chamber pot.-that part of the bore of a piece of ordnance which holds the charge, esp. when of different diameter from the rest of the bore; -- formerly, in guns, made smaller than the bore, but now larger, esp. in breech-loading guns.-a cavity in a mine, usually of a cubical form, to contain the powder.-a short piece of ordnance or cannon, which stood on its breech, without any carriage, formerly used chiefly for rejoicings and theatrical cannonades.-to reside in or occupy a chamber or chambers.-to be lascivious.-to shut up, as in a chamber.-to furnish with a chamber; as, to chamber a gun.