Other forms: fetlocks
The fetlock is the joint just above a horse's hoof. Injure a fetlock, the fetlock joint, deep in mud to the fetlock.
It takes enormous force at the gallop and is where many racing injuries happen. The name looks like foot plus lock but is not: it comes from an old word for the tuft of hair that grows behind the joint.
1nounfetlockThe joint just above a horse's hoof.
“The horse was standing in mud up to its fetlocks.”
fetlock is a joint.
Middle English fitlok comes from an old Germanic word for the tuft of hair behind the joint, not from foot plus lock.
Old English
-oc
Middle English
fitlokes
English, today
fetlock
From Middle English fitlokes, feetlakkes, taken to be foot + lock but actually a misdivision of Old English -oc. Cognate with Middle Low German fitlok, fitlock (“fetlock”), Dutch vitlok, vittelokke, vitslok, German Fissloch, Fisloch, Fislach (“fetlock; pastern”).
Etymology from Wiktionary, CC BY-SA