1350–1400; Middle English. See chamber, -ed3

unchambered, adjective Unabridged


a room, usually private, in a house or apartment, especially a bedroom: She retired to her chamber.
a room in a palace or official residence.
the meeting hall of a legislative or other assembly.
chambers, Law.
a place where a judge hears matters not requiring action in open court.
the private office of a judge.
(in England) the quarters or rooms that lawyers use to consult with their clients, especially in the Inns of Court.
a legislative, judicial, or other like body: the upper or the lower chamber of a legislature.
an organization of individuals or companies for a specified purpose.
the place where the moneys due a government are received and kept; a treasury or chamberlain's office.
(in early New England) any bedroom above the ground floor, generally named for the ground-floor room beneath it.
a compartment or enclosed space; cavity: a chamber of the heart.
(in a canal or the like) the space between any two gates of a lock.
a receptacle for one or more cartridges in a firearm, or for a shell in a gun or other cannon.
(in a gun) the part of the barrel that receives the charge.
of, pertaining to, or performing chamber music: chamber players.
verb (used with object)
to put or enclose in, or as in, a chamber.
to provide with a chamber.

1175–1225; Middle English chambre < Old French < Latin camera, variant of camara vaulted room, vault < Greek kamára

underchamber, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
chamber (ˈtʃeɪmbə)
1.  a meeting hall, esp one used for a legislative or judicial assembly
2.  a reception room or audience room in an official residence, palace, etc
3.  archaic, poetic or a room in a private house, esp a bedroom
4.  a.  a legislative, deliberative, judicial, or administrative assembly
 b.  any of the houses of a legislature
5.  an enclosed space; compartment; cavity: the smallest chamber in the caves
6.  the space between two gates of the locks of a canal, dry dock, etc
7.  an enclosure for a cartridge in the cylinder of a revolver or for a shell in the breech of a cannon
8.  obsolete a place where the money of a government, corporation, etc, was stored; treasury
9.  short for chamber pot
10.  (NZ) the freezing room in an abattoir
11.  (modifier) of, relating to, or suitable for chamber music: a chamber concert
12.  (tr) to put in or provide with a chamber
[C13: from Old French chambre, from Late Latin camera room, Latin: vault, from Greek kamara]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Word Origin & History

early 13c., from O.Fr. chambre, from L.L. camera "a chamber, room" (see camera). Chamber-pot is from 1560s; chambermaid is from 1580s.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

chamber cham·ber (chām'bər)
A compartment or enclosed space.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Bible Dictionary

Chamber definition

"on the wall," which the Shunammite prepared for the prophet Elisha (2 Kings 4:10), was an upper chamber over the porch through the hall toward the street. This was the "guest chamber" where entertainments were prepared (Mark 14:14). There were also "chambers within chambers" (1 Kings 22:25; 2 Kings 9:2). To enter into a chamber is used metaphorically of prayer and communion with God (Isa. 26:20). The "chambers of the south" (Job 9:9) are probably the constelations of the southern hemisphere. The "chambers of imagery", i.e., chambers painted with images, as used by Ezekiel (8:12), is an expression denoting the vision the prophet had of the abominations practised by the Jews in Jerusalem.

Easton's 1897 Bible Dictionary
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Example sentences
Their shells vary from simple tubes and spheres to elaborate, multi-chambered
  spirals and long, striated pods.
At five weeks, an embryo has developed a four-chambered heart and begun pumping
Bone tissue and a two-chambered mouse heart have both been successfully printed.
Some of the fastest-twitching muscles in the world reside in the two-chambered
  swim bladder of toadfish.
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