[count] 1 : a small space inside something (such as a machine or your body)
▪ He put three bullets into the chamber of the gun. ▪ the chambers of the heart 2 : a usually large room where members of a government group (such as a legislature) have meetings
▪ We waited for the senator outside the Senate chamber. 3 : a group of people who form part of a government
▪ The U.S. legislature is separated into two chambers: the Senate and the House of Representatives. ▪ the upper and lower chambers of the British Parliament [=the House of Lords and the House of Commons] — see also chamber of commerce 4 : a room where a judge goes to do official business or to discuss cases with lawyers outside of the courtroom — usually plural ▪ the judge's chambers 5 formal + old-fashioned : a person's bedroom or other private room
▪ the queen's personal chambers ▪ a bridal chamber [=a bedroom used by two people who have just been married] ▪ the temple's inner chambers 6 : a room used for a special purpose
▪ the burial chambers inside an Egyptian pyramid ▪ a torture chamber — see also gas chamber