Suction

suction
    n 1: a force over an area produced by a pressure difference
    2: the act of sucking [syn: {sucking}, {suck}, {suction}]
    v 1: remove or draw away by the force of suction; "the doctors
         had to suction the water from the patient's lungs"
    2: empty or clean (a body cavity) by the force of suction;
       "suction the uterus in an abortion"
    

Suction \Suc"tion\, n. [L. sugere, suctum, to suck; cf. OF.
   suction. See {Suck}, v. t.]
   The act or process of sucking; the act of drawing, as fluids,
   by exhausting the air.
   [1913 Webster]

   {Suction chamber}, the chamber of a pump into which the
      suction pipe delivers.

   {Suction pipe}, {Suction valve}, the induction pipe, and
      induction valve, of a pump, respectively.

   {Suction pump}, the common pump, in which the water is raised
      into the barrel by atmospheric pressure. See Illust. of
      {Pump}.
      [1913 Webster]
    

32 Moby Thesaurus words for "suction":
      aspiration, bleeding, bloodletting, broaching, cupping, drafting,
      drag, drainage, draining, drawing, emptying, favor, inhalation,
      inhalement, inside track, inspiration, interest, milking,
      phlebotomy, pipetting, pull, pumping, siphoning, sniff, sniffle,
      snuff, snuffle, special favor, suck, sucking, tapping,
      venesection