#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
  part:  head.projection  pinhead  point.end  shank.cylinder
  subtype:  barrette  a pin for holding women's hair in place
  subtype:  bitt_pin  a pin through the bitthead to keep the mooring lines from slipping off
  subtype:  hairpin  a double pronged pin used to hold women's hair in place
     subtype:  bobby_pin__bobbypin__hairgrip__grip  a flat wire hairpin whose prongs press tightly together; used to hold bobbed hair in place; "in England they call a bobby pin a grip"
     subtype:  bodkin.hairpin  formerly a long hairpin; usually with an ornamental head
  subtype:  hatpin  a long sturdy pin used by women to secure a hat to their hair
  subtype:  linchpin__lynchpin  pin inserted through an axletree to hold a wheel on
  subtype:  peg.pin  a wooden pin pushed or driven into a surface
     subtype:  golf_tee__tee  a short peg put into the ground to hold a golf ball off the ground
     subtype:  tent_peg  a peg driven into the ground to hold a rope supporting a tent
     subtype:  treenail__trenail__trunnel  a wooden peg that is used to fasten timbers in shipbuilding; water causes the peg to swell and hold the timbers fast
  subtype:  rivet  heavy pin having a head at one end and the other end being hammered flat after being passed through holes in the pieces that are fastened together
  subtype:  safety_pin  a pin in the form of a clasp; has a guard so the point of the pin will not stick the user
  subtype:  skewer  a long pin for holding meat in position while it is being roasted
     subtype:  spit  a skewer for holding meat over a fire
        subtype:  turnspit  a roasting spit that can be turned
  subtype:  straight_pin  pin consisting of a short straight stiff piece of wire with a pointed end; used to fasten pieces of cloth or paper together
  subtype:  toggle  a wooden peg or pin inserted into the eye at the end of rope in order to fasten it to something
  subtype:  wrist_pin__wristpin__gudgeon_pin__gudgeonpin  pin joining a piston to a connecting rod

No statement uses or specializes pin; click here to add one.