#strap  an elongated leather strip (or or strip of similar material) for binding things together or holding something in position
  supertype:  #leather_strip__leatherstrip  implement consisting of a strip of leather
  part of:  #luggage
  subtype:  #bootstrap  a strap that is looped and sewn to the top of a boot for pulling it on
  subtype:  #cheekpiece  either of two straps of a bridle that connect the bit to the headpiece
  subtype:  #chin_strap  a strap attached to a hat; passes under the chin and holds the hat in place
  subtype:  #crupper  a strap from the back of a saddle passing under the horse's tail; prevents saddle from slipping forward
  subtype:  #rein  one of a pair of long straps (usually connected to the bit or the headpiece) used to control a horse
     subtype:  #bearing_rein__bearingrein__checkrein  a rein designed to keep the horse's head in the desired position
     subtype:  #leading_rein__leadingrein  rein to direct the horse's head left or right
  subtype:  #strop  a leather strap used to sharpen razors

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