#pin  a small slender (often pointed) piece of wood or metal used to support or fasten or attach things
  supertype:  #holdfast__fastener__fastening  restraint that attaches to something or holds something in place
  subtype:  #barrette  #bitt_pin  #hairpin  #hatpin  #linchpin  #peg.pin  #rivet  #safety_pin  #skewer  #straight_pin  #toggle  #wrist_pin
  part:  #head.projection  a projection out from one end; "the head of the nail", "a pinhead is the head of a pin"
  part:  #pinhead  the head of a pin
  part:  #point.end  sharp end; "he stuck the point of the knife into a tree"; "he broke the point of his pencil"
  part:  #shank.cylinder__stem  cylinder forming a long narrow part of something

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