A Chamber

1. A room or set of rooms, particularly:

• The private room of an individual, especially of someone wealthy or noble.
• A bedroom.
• The private office of a judge.
• The room used for deliberation by a legislature.
• (Britain) A single law office in a building housing several.
• (dated, usually in the plural) Rooms in a lodging house.

2. A chamberpot.
3. (figuratively) The legislature or division of the legislature itself.
4. Any enclosed space occupying or similar to a room.
5. (biology) An enlarged space in an underground tunnel of a burrowing animal.
6. (firearms) The area holding the ammunition round at the initiation of its discharge.
7. (firearms) One of the bullet-holding compartments in the cylinder of a revolver.
8. (historical) A short piece of ordnance or cannon which stood on its breech without any carriage, formerly used chiefly for celebrations and theatrical cannonades.
9. One of the two atria or two ventricles of the heart.
10. (obsolete) Clipping of chamber pot: a container used for urination and defecation in one's chambers.

(chamber pot): chamber pot