Source : Webster's Revised Unabridged Dictionary (1913)

Air chamber \Air" cham`ber\
   1. A chamber or cavity filled with air, in an animal or
      plant.

   2. A cavity containing air to act as a spring for equalizing
      the flow of a liquid in a pump or other hydraulic machine.



   2. pl. Apartments in a lodging house. ``A bachelor's life in
      chambers.'' --Thackeray.

   3. A hall, as where a king gives audience, or a deliberative
      body or assembly meets; as, presence chamber; senate
      chamber.

   4. A legislative or judicial body; an assembly; a society or
      association; as, the Chamber of Deputies; the Chamber of
      Commerce.

   5. A compartment or cell; an inclosed space or cavity; as,
      the chamber of a canal lock; the chamber of a furnace; the
      chamber of the eye.

   6. pl. (Law.) A room or rooms where a lawyer transacts
      business; a room or rooms where a judge transacts such
      official business as may be done out of court.

   7. A chamber pot. [Colloq.]

   8. (Mil.)
      (a) That part of the bore of a piece of ordnance which
          holds the charge, esp. when of different diameter from
          the rest of the bore; -- formerly, in guns, made
          smaller than the bore, but now larger, esp. in
          breech-loading guns.
      (b) A cavity in a mine, usually of a cubical form, to
          contain the powder.
      (c) A short piece of ordnance or cannon, which stood on
          its breech, without any carriage, formerly used
          chiefly for rejoicings and theatrical cannonades.

   {Air chamber}. See {Air chamber}, in the Vocabulary.

   {Chamber of commerce}, a board or association to protect the
      interests of commerce, chosen from among the merchants and
      traders of a city.

   {Chamber council}, a secret council. --Shak.

   {Chamber} {counsel or counselor}, a counselor who gives his
      opinion in private, or at his chambers, but does not
      advocate causes in court.

   {Chamber fellow}, a chamber companion; a roommate; a chum.

   {Chamber hangings}, tapestry or hangings for a chamber.

   {Chamber lye}, urine. --Shak.

   {Chamber music}, vocal or instrumental music adapted to
      performance in a chamber or small apartment or audience
      room, instead of a theater, concert hall, or church.

   {Chamber practice} (Law.), the practice of counselors at law,
      who give their opinions in private, but do not appear in
      court.

   {To sit at chambers}, to do business in chambers, as a judge.