#hammer  a hand tool with a heavy rigid head and a handle; used to deliver an impulsive force by striking
  supertype:  hand_tool  a tool used with workers' hands
  subtype:  ball-peen_hammer  bricklayer's_hammer  carpenter's_hammer  mallet.hammer  maul  plexor  tack_hammer
  part:  hammerhead  the striking part of a hammer
     part:  peen  the part of a hammerhead opposite the flat striking surface (may have various shapes)
  part:  head.striker  the striking part of a tool; "the head of the hammer"
     part:  face.surface  the striking or working surface of an implement

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