#head.striker  the striking part of a tool; "the head of the hammer"
  supertype:  #striker  the part of a mechanical device that strikes something
  part:  #face.surface
  part of:  #hammer  #ram
  subtype:  #golfclub_head__club_head  the head of the golf club that strikes the ball
  subtype:  #hammerhead  the striking part of a hammer

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