n A room or set of rooms
n The private room of an individual, especially of someone wealthy or noble.
n A bedroom.
n The private office of a judge.
n The room used for deliberation by a legislature.
n (UK) A single law office in a building housing several.
n (dated, usually in the plural) Rooms in a lodging house.
n (figuratively) The legislature or division of the legislature itself.
n Any enclosed space occupying or similar to a room.
n (biology) An enlarged space in an underground tunnel of a burrowing animal.
n (firearms) The area holding the ammunition round at the initiation of its discharge.
n (firearms) One of the bullet-holding compartments in the cylinder of a revolver.
n (historical) A short piece of ordnance or cannon which stood on its breech without any carriage, formerly used chiefly for celebrations and theatrical cannonades.
n One of the two atria or two ventricles of the heart.
v To enclose in a room.
v To reside in or occupy a chamber or chambers.
v To place in a chamber, as a round of ammunition.
v To create or modify a gun to be a specific caliber.
v (martial arts) To prepare an offensive, defensive, or counteroffensive action by drawing a limb or weapon to a position where it may be charged with kinetic energy.
v (obsolete) To be lascivious.
n A surname.
n (obsolete) Ellipsis of chamber pot: a container used for urination and defecation in one's chambers. [A container used for urination and defecation, particularly those used in early modern towns before the advent of the flush toilet.]