cham·​ber | \ˈchām-bər \

Definition of chamber 

(Entry 1 of 3)

1 : room especially : bedroom

2 : a natural or artificial enclosed space or cavity

3a : a hall for the meetings of a deliberative, legislative, or judicial body the senate chamber

b : a room where a judge transacts business usually used in plural

c : the reception room of a person of rank or authority

4a : a legislative or judicial body especially : either of the houses of a bicameral legislature

b : a voluntary board or council

5a : the part of the bore of a gun that holds the charge

b : a compartment in the cartridge cylinder of a revolver


chambered; chambering\-​b(ə-​)riŋ \

Definition of chamber (Entry 2 of 3)

transitive verb

1 : to place in or as if in a chamber : house

2 : to serve as a chamber for especially : to accommodate in the chamber of a firearm



Definition of chamber (Entry 3 of 3)

: being, relating to, or performing chamber music

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Other Words from chamber


chambered \-​bərd \ adjective

Examples of chamber in a Sentence


He put three bullets into the chamber of the gun. the chambers of the heart We waited for the senator outside the Senate chamber. The U.S. legislature is separated into two chambers: the Senate and the House of Representatives.


chambered the lost hikers in the barn until the next morning
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Recent Examples on the Web: Noun

While both chambers have already approved their own takes on the bill, the main holdup continues to be disagreements between the House and the Senate over just how strong to make certain provisions. Li Zhou, Vox, "Congress seemed determined to tackle its sexual harassment problem. But, the bill is still stalled.," 6 Dec. 2018 However, according to The Hill, both chambers recently received funds to pay interns in appropriations bills in 2018, set to take effect in 2019. Christianna Silva, Teen Vogue, "Alexandria Ocasio-Cortez Promises She Will Pay Her Congressional Interns, Unlike Much of Congress Historically," 5 Dec. 2018 Lawmakers from both chambers will participate in an arrival ceremony Monday evening and the Capitol will be open around the clock to allow the country to pay its respects. Seattle Times News Services, The Seattle Times, "Nation to pause in honor of former President George H.W. Bush on Wednesday," 3 Dec. 2018 After flipping both chambers of the New Hampshire legislature on Nov. 6, Democratic members appear poised to back Democrat Colin Van Ostern on Wednesday when all 424 incoming state lawmakers will vote. Jon Kamp, WSJ, "New Hampshire Secretary of State Faces Job Threat After 42 Years," 1 Dec. 2018 Experts say immigrants will face an even bleaker future if Republicans continue to control both chambers of Congress. Jenny Hollander, Marie Claire, "Do I Have to Vote? Here Are Some of the Scary Things That Could Happen If You Don't," 6 Nov. 2018 With Republicans running the White House and both chambers of Congress, GOP leaders have worried that voters would blame them for a shutdown, worsening the party's prospects for retaining congressional control. Samuel Chamberlain, Fox News, "Senate approves $146B 'minibus' spending bill, sends to House," 13 Sep. 2018 Republicans control the governor’s office, all statewide elected offices and both chambers of the state Legislature, where Democrats are a small minority. Houston Chronicle, "Does the Democratic Party have the talent, money to carry the day?," 22 June 2018 Conroy has served as the chamber's chaplain since 2011. Fox News, "Ryan allows Rev. Patrick Conroy to keep job after House chaplain rescinds resignation," 2 Oct. 2018

Recent Examples on the Web: Verb

Rattlers are personal defense weapons available on the open market and chamber standard 5.56mm rounds and .300 Blackout. Allison Barrie, Fox News, "Weapons upgrade set to make US Special Operations even more deadly," 13 Sep. 2018 Brooklynn Mae Mohler was shot and killed on June 4, 2013 by her best friend, who was playing with her father's gun that was left loaded/chambered, with no safety, in a kitchen cabinet. Cassie Armstrong,, "National SAFE Day: How to observe in Central Florida," 4 June 2018 Tomes was angry about the noise Gaeta's kids were making, and after an argument with the father in the apartment parking lot, Tomes grabbed the rifle from his car, chambered a round and pointed it at Gaeta and Smith. Everton Bailey Jr.,, "Newport man upset over noisy kids accused of shooting 2 neighbors with AK-47 rifle," 16 May 2018 Special operations snipers will replace their 7.62 bullets with a new round favored by civilian precision rifle shooters, while the Army’s next-generation squad machine gun will be chambered in a new caliber using new casing technology. Kyle Mizokami, Popular Mechanics, "U.S. Army Getting New Machine Gun Round, Special Ops Getting New Sniper Bullet," 10 May 2018 The officer reaches for his semiautomatic pistol, and in a quick action, pulls back the pistol slide to chamber a round, a video shows. Alex Horton,, "An off-duty police officer thought a man stole Mentos. So he drew his gun.," 6 May 2018 Benefits chamber scholarships, events and projects. Ramona Sentinel, "Our Town Calendar: April 12-17," 11 Apr. 2018 Shotguns can be single-shot weapons, pump action weapons in which a single pump chambers a round, and semi-automatic. Kyle Mizokami, Popular Mechanics, "What a Gun Is," 7 Mar. 2018 Of those, 87 were loaded, and nearly half of the guns loaded with ammo also had a live round chambered, ready to fire. Fredrick Kunkle, Washington Post, "TSA sets weekly record for finding firearms in carry-on bags," 20 Feb. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'chamber.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of chamber


13th century, in the meaning defined at sense 1


1568, in the meaning defined at sense 1


1706, in the meaning defined above

History and Etymology for chamber


Middle English chambre, from Anglo-French, from Late Latin camera, from Latin, arched roof, from Greek kamara vault

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Statistics for chamber

Last Updated

14 Dec 2018

Look-up Popularity

Time Traveler for chamber

The first known use of chamber was in the 13th century

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More Definitions for chamber



English Language Learners Definition of chamber

: a small space inside something (such as a machine or your body)

: a usually large room where members of a government group (such as a legislature) have meetings

: a group of people who form part of a government


cham·​ber | \ˈchām-bər \

Kids Definition of chamber

1 : an enclosed space, cavity, or compartment the chambers of the heart

2 : a room in a house and especially a bedroom

3 : a room used for a special purpose the pyramid's burial chamber

4 : a meeting hall of a government body the Senate chamber

5 : a room where a judge conducts business outside of the courtroom

6 : a group of people organized into a lawmaking body The Senate and the House of Representatives make up the two chambers of the United States legislature.

7 : a board or council of volunteers (as businessmen)

Other Words from chamber

chambered \-​bərd \ adjective a chambered shell


cham·​ber | \ˈchām-bər \

Medical Definition of chamber 

: an enclosed space within the body of an animal — see anterior chamber, posterior chamber, pulp chamber, vitreous chamber

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Legal Definition of chamber 

1 : a judge's office specifically : 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

2a : a hall for the meetings of a deliberative, legislative, or judicial body or assembly to run back into the House chamber— Tip O'Neill

b : a legislative or judicial body : house

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More from Merriam-Webster on chamber

Thesaurus: All synonyms and antonyms for chamber

Spanish Central: Translation of chamber

Nglish: Translation of chamber for Spanish Speakers

Britannica English: Translation of chamber for Arabic Speakers

Comments on chamber

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having a pattern of small flowers

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