fetlock

名词 fetlock:

1. the joint between the cannon bone and the pastern
   同义词：fetlock joint
2. projection behind and above a horse's hoof

fet.lock

n.（名词）

A projection on the lower part of the leg of a horse or related animal, above and behind the hoof.
球节：马或相关动物腿下部蹄后上部的突起部分
A tuft of hair on such a projection.
距毛，丛毛：此突起部分的一丛毛
The joint marked by such a projection.
肢关节：长有这样突起部分的关节

来源：
Middle English fitlok * see ped-
中古英语 fitlok *参见 ped-