#rein  one of a pair of long straps (usually connected to the bit or the headpiece) used to control a horse
  supertype:  strap  an elongated leather strip (or or strip of similar material) for binding things together or holding something in position
  subtype:  bearing_rein  leading_rein
  part of:  bridle  headgear for a horse; includes a headstall and bit and reins to give the rider or driver control
     part of:  harness.stable_gear__harnes  stable gear consisting of an arrangement of leather straps fitted to a draft animal so that it can be attached to and pull a cart

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