Definition of chamber noun from the Oxford Advanced American Dictionary

      

    chamber

     noun
    noun
    NAmE//ˈtʃeɪmbər//
     
     
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  1. 1[countable] (in compounds) a room used for the particular purpose that is mentioned a burial chamber Divers transfer from the water to a decompression chamber. see also gas chamber
  2. 2[countable] a space under the ground that is almost completely closed on all sides They found themselves in a vast underground chamber.
  3. 3[countable] a space in the body, in a plant, or in a machine, that is separated from the rest the chambers of the heart the rocket's combustion chamber the chamber of a gun (= the part that holds the bullets)
  4. 4chambers [plural] an office used by a judge
  5. 5[countable] a room in a public building that is used for formal meetings the Senate/House chamber see also Chamber of Commerce
  6. 6[countable] one of the parts of a parliament the Chamber of Deputies in the Italian parliament Under Senate rules, the chamber must vote on the bill by this Friday.
  7. 7[countable] (old use) a bedroom or private room Lady Eleanor was found dead in her chamber.
See the Oxford Advanced Learner's Dictionary entry: chamber