#pump  a mechanical device that moves fluid or gas by pressure or suction
  supertype:  mechanical_device  mechanism consisting of a device that works on mechanical principles
  subtype:  air_pump  aspirator  auxiliary_pump  bicycle_pump  bilge_pump  centrifugal_pump  force_pump  gas_pump  grease-gun  hand_pump  heart-lung_machine  hydraulic_pump  lift_pump  oil_pump  stirrup_pump  suction_pump  water_pump
  part of:  engine_cooling_system  fuel_system
  part:  piston_chamber__cylinder  a chamber within which piston moves
     part:  intake_valve  a valve that controls the flow of fluid through an intake

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