chamber

/ˈtʃeɪmbər/
noun
  1. A room, especially a private or formal one in a house or building.
    • They decorated the main chamber with tapestries and chandeliers.
    • The hotel suite had a separate sitting chamber and a bedroom.
    • The queen retired to her private chamber for the evening.
  2. A large room used for official meetings or as a legislative assembly hall.
    • The senators debated the bill in the upper chamber of the parliament.
    • The courtroom was packed as the judge entered the chamber.
    • The city council meets every Tuesday in the main chamber.
  3. An enclosed space or compartment inside a machine, body, or structure.
    • The gun's chamber holds a single bullet before firing.
    • The heart has four chambers that pump blood through the body.
    • The camera's film chamber must be loaded in complete darkness.
  4. A group of people organized for a specific purpose, especially business or trade.
    • She joined the chamber of architects to network with other professionals.
    • The chamber of industry released a report on economic growth.
    • The local chamber of commerce supports small businesses in the area.
verb
  1. To place or load something into a chamber, especially a bullet into a gun.
    • The soldier chambered a round and aimed at the target.
    • She chambered the arrow into the crossbow before taking aim.
    • He carefully chambered the film into the old camera.
Synonyms
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