term:

Chamber

chamber n

1 : a judge's office
;specif
: the private office where a judge carries on business other than court sessions (as conferences or signing papers) usually used in pl. [four other judges met in my chambers "R. H. Bork"] [a hearing in chambers]
2 a : a hall for the meetings of a deliberative, legislative, or judicial body or assembly [to run back into the House "Tip O'Neill"]
b : a legislative or judicial body
: house [approved by two-thirds of each of Congress "U.S. Code"]

Source: Merriam-Webster's Dictionary of Law ©1996. Merriam-Webster, Incorporated. Published under license with Merriam-Webster, Incorporated.