cham ‧ ber /ˈtʃeɪmbə $ -ər/ BrE AmE noun
[ Date: 1100-1200 ; Language: Old French ; Origin: chambre , from Late Latin camera , from Latin , 'curved roof' , from Greek kamara ]
1 . ENCLOSED SPACE [countable] an enclosed space, especially in your body or inside a machine:
a combustion chamber
The heart has four chambers.
2 . ROOM [countable] a room used for a special purpose, especially an unpleasant one
gas/torture chamber (=used for killing people by gas or for hurting them)
3 . MEETING ROOM [countable] a large room in a public building used for important meetings:
the council chamber
4 . PARLIAMENT [countable] one of the two parts of a parliament or of the US Congress. For example, in Britain the upper chamber is the House of Lords and the lower chamber is the House of Commons.
5 . PRIVATE ROOM [countable] a word used in the past to mean a bedroom or private room:
the Queen’s private chambers
6 . chambers [plural] especially British English an office or offices used by ↑ barrister s or judges
7 . GUN [countable] the part of a gun where you put the bullets