Definition from Wiktionary, the free dictionary
Alternative forms 
- chambre (obsolete)
chamber (plural chambers)
- A room, especially one used primarily for sleeping; bedroom, sleeping room.
- An enclosed space. For example, a test chamber is typically a closable case where devices under test are placed.
- In a firearm, this is the portion of the weapon that holds the ammunition round immediately prior to (and during initiation of) its discharge.
- Dianne loaded a cartridge into the chamber of the rifle, then prepared to take aim at the target.
- One of the legislative bodies in a government where multiple such bodies exist, or a single such body in comparison to others.
- The resolution, which speedily passed the Senate, was unable to gain a majority in the lower chamber.
part of a firearm holding the round before firing
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Related terms 
- bubble chamber
- chamber music
- chamber of commerce
- chamber pot
- cloud chamber
- in chambers
- Wilson chamber
- To enclose in a room.
- She had chambered herself in her room, and wouldn't come out.
- To place in a chamber, as a round of ammunition.
- The hunter fired at the geese and missed, then shrugged his shoulders and chambered another cartridge.
- To create or modify a gun to be a specific caliber.
- The rifle was originally chambered for 9MM, but had since been modified for a larger, wildcat caliber.
- In martial arts, to prepare an offensive, defensive, or counteroffensive action by drawing a limb or weapon to a position where it may be charged with kinetic energy.
- Bob chambered his fist for a blow, but Sheila struck first.