headstall

1. A harness, consisting of a headstall, bit, and reins, fitted about a horse's head and used to restrain or guide the animal.
   安放在马头周围，用来限制或引导动物的一种马具，包括笼头、马勒、缰绳。
2. Headgear for a horse; includes a headstall and bit and reins to give the rider or driver control.
   马的挽具；包括马笼头、马嚼子可以让骑者或赶马的人控制。

noun

1. the band that is the part of a bridle that fits around a horse's head

   Synonym:    headpiece