cham·​ber | \ ˈchām-bər How to pronounce chamber (audio) \

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\ ˈchām-​b(ə-​)riŋ How to pronounce chamber (audio) \

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 \ ˈchām-​bərd How to pronounce chamber (audio) \ adjective

Examples of chamber in a Sentence

Noun 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. Verb chambered the lost hikers in the barn until the next morning
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Recent Examples on the Web: Noun Advancing bills include those that have either passed at least one chamber or have otherwise made progress at the committee level. Janie Boschma, CNN, 28 May 2021 Ho said the danger is evidenced by what happened when Arkansas' bill passed through one legislative chamber. NBC News, 27 May 2021 It was co-led in the House by Rep. John Katko (R-N.Y.) and passed the lower chamber with 35 Republican votes. Andrew Solender, Forbes, 25 May 2021 Policy bills that don't pass at least one chamber by the deadline otherwise face long odds to be considered again before 2023. Bryan Anderson, Star Tribune, 12 May 2021 Republicans overturned his veto in one chamber, but did not have the votes to do so in the other. Bryan Anderson,, 11 May 2021 Democrats control more than 60% of seats in one Illinois legislative chamber and nearly 70% in the other. The Editorial Board, WSJ, 30 Apr. 2021 The sweeping reform bill named for Floyd that passed the lower chamber in March would eliminate qualified immunity, but Republicans fear such a step would open officers who acted in good faith to liability. Grace Segers, CBS News, 22 Apr. 2021 At least one legislative chamber in Arkansas, Wisconsin and Tennessee passed a similar measure. Fred Lucas, Fox News, 22 Apr. 2021 Recent Examples on the Web: Verb On the outdoor stage there is an eclectic range of music, from Afro-Cuban to chamber. Gerald Eskenazi, Forbes, 3 June 2021 Registration is open only to chamber members through Monday. Laura Groch, San Diego Union-Tribune, 30 May 2021 The Chamber is asking participants to make a donation of a non-perishable food item to chamber members Gifts of Love and the Salvation Army., 7 May 2021 Today, most riflemakers chamber for the .22-250 Remington and .223 Remington, but almost none make a rifle for the Swift. Ron Spomer, Outdoor Life, 12 Mar. 2021 To fire, hold the action release down and pump once to chamber a round before firing. Jim Baird, Field & Stream, 21 Oct. 2020 Wayne Prender, Textron’s senior vice president for applied technologies, declined to comment on the specifics of the firing system or on the design of the rifles that chamber the new ammunition, which is being manufactured by Olin Winchester. Andrew Mckean, Outdoor Life, 7 Oct. 2020 In an interview with Begnaud, Griffin police detective Adam Trammell used the same type of firearm Higdon used, a Glock 42, to show how to load the magazine and then pull back the slide to chamber a bullet. Stephen Mccain, CBS News, 21 Sep. 2020 With upward pressure on the magazine, use your firing hand thumb to sweep the slide release downward to close the slide and chamber a fresh round. Chris Mudgett, Outdoor Life, 1 July 2020 Recent Examples on the Web: Adjective With less than a week and a half left in the legislative session, bills to crack down on police officers with histories of misconduct have been caught in the crosshairs of inter-chamber tensions and are in danger of not passing. James Barragán, San Antonio Express-News, 21 May 2021 One of those plugs incorporates a passive pre-chamber ignition system. Mike Duff, Car and Driver, 9 Sep. 2020 If there is any doubt of this technology's value, know that Formula 1 engines use pre-chamber ignition. Mike Duff, Car and Driver, 9 Sep. 2020 Maserati has employed a dual-spark-plug configuration with an innovative pre-chamber combustion system integrated into the cylinder heads. David Beard, Car and Driver, 2 July 2020

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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Time Traveler for chamber

Time Traveler

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

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Statistics for chamber

Last Updated

5 Jun 2021

Cite this Entry

“Chamber.” Dictionary, Merriam-Webster, Accessed 15 Jun. 2021.

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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 How to pronounce chamber (audio) \

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 How to pronounce chamber (audio) \

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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