Bible Dictionaries
Thoroughpin

Webster's Dictionary

(n.) A disease of the hock (sometimes of the knee) of a horse, caused by inflammation of the synovial membrane and a consequent excessive secretion of the synovial fluid; - probably so called because there is usually an oval swelling on each side of the leg, appearing somewhat as if a pin had been thrust through.

Bibliography Information
Webster, Noah. Entry for 'Thoroughpin'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​t/thoroughpin.html. 1828.