fet ‧ lock /ˈfetlɒk $ -lɑːk/ BrE AmE noun [countable]
[ Date: 1300-1400 ; Origin: Probably from ⇨ ↑ foot 1 + ⇨ ↑ lock 2 'hair' ]
the back part of a horse’s leg, just above the ↑ hoof
fet ‧ lock /ˈfetlɒk $ -lɑːk/ BrE AmE noun [countable]
[ Date: 1300-1400 ; Origin: Probably from ⇨ ↑ foot 1 + ⇨ ↑ lock 2 'hair' ]
the back part of a horse’s leg, just above the ↑ hoof
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012