SG Heritage Dictionary

Capellet [Noun] Webster's Dictionary 1828

A kind of swelling, like a wen, growing on the heel of the hock on a horse, and on the point of the elbow.

Capellet [Noun] Webster's Dictionary 1913

A swelling, like a wen, on the point of the elbow (or the heel of the hock) of a horse, caused probably by bruises in lying down.