air pump

2 definitions found

air pump - Collaborative International Dictionary of English v.0.48 :

  Air pump \Air" pump`\
     1. (Physics) A kind of pump for exhausting air from a vessel
        or closed space; also, a pump to condense air or force it
        into a closed space.
        [1913 Webster]
  
     2. (Steam Engines) A pump used to exhaust from a condenser
        the condensed steam, the water used for condensing, and
        any commingled air.
        [1913 Webster]

air pump - WordNet (r) 2.1 (2005) :

  air pump
      n 1: a pump that moves air in or out of something [syn: air pump
           , vacuum pump]