pas·tern
noun/ˈpæstən/
/ˈpæstərn/
(anatomy)- the part of a horse’s foot between the fetlock and the hoof
（马足部的）骹 Word OriginMiddle English: from Old French pasturon, from pasture ‘strap for hobbling a horse’ (tying its legs together to prevent it from moving), transferred in sense to the joint of the foot.