REINS

—are the parts of a bridle which are affixed to the eyes of the bit, or bits, on each side a horse's mouth, pa up the horse's neck, and are united at the reverse end, where the junction of both are held in the hand of the rider. A snaffle-bridle, and a hard-and-sharp, have each of them two reins; a Pelham and a Weymouth have each four.