That part of a bridle or halter which encompasses the head.
the band that is the part of a bridle that fits around a horse's head
the part of a bridle that encircles the head of a horse.
the part of the halter or bridle which goes over the head behind the ears
Straps that go over a horse's head which, together with a bit and reins, form the bridle. There are many different styles.