#lever  a rigid bar pivoted about a fulcrum
  supertype:  bar.artifact  a rigid piece of metal or wood; usually used as a fastening or obstruction of weapon; "there were bars in the windows to prevent escape"
  subtype:  compound_lever  crowbar  gun_trigger  hand_throttle  key.lever  peavey  foot_pedal  pinch_bar  ripping_bar  rocker_arm  spark_lever  control_stick  tappet  tiller  tire_iron
  part:  fulcrum  the pivot about which a lever turns

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