Main Entry: fet·lock

Pronunciation: \ˈfet-ˌläk\

Function: noun

Etymology: Middle English fitlok, fetlak; akin to Old English fōt foot

Date: 14th century

1 a : a projection bearing a tuft of hair on the back of the leg above the hoof of a horse or similar animal — see horse illustration b : the tuft of hair itself
2 : the joint of the limb at the fetlock