varvel

Etymology
From, from derivation of.

Noun

 * 1)  A metal ring bearing the owner's name or coat of arms, attached to a hawk's jesses. Used for identifying birds.
 * 2) * 1894 — James Parker, A Glossary of Terms Used in Heraldry, s.v. Falcon.
 * To the jesses, it is said, are attached the varvels, sometimes written vervels, or rings.