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  1. an apparatus or device employing suction.
  2. Hydraulics. a suction pump that operates by the pressure differential created by the high-speed flow of a fluid past an intake orifice.
  3. Medicine/Medical. an instrument for removing body fluids by suction.


  1. a device employing suction, such as a jet pump or one for removing fluids from a body cavity


  1. An apparatus for removing fluid from a body cavity, consisting usually of a hollow needle and a cannula, connected by tubing to a container in which a vacuum is created by a syringe or a suction pump.

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