Pastern /(?)/

Pas·tern

Pastern

n.
  1. The part of the foot of the horse, and allied animals, between the fetlock and the coffin joint. See Illust. of Horse.
  2. A shackle for horses while pasturing.
  3. A patten. [Obs.]

Phrases & Compounds
Pastern joint
the joint in the hoof of the horse, and allied animals, between the great and small pastern bones.