Definitions

1. noun

a degenerative disease of the hock or fetlock of a horse, characterized by the formation of a bony growth.

“The veterinarian examined the spavin on the horse’s hock and recommended a treatment plan.”

2. noun

a swelling or bony growth on the leg of a horse, especially on the hock or fetlock.

“The spavin on the horse’s leg made it difficult for the rider to balance.”