¦ noun historical
1. a small seal, especially one set in a ring, used instead of or with a signature to give authentication to an official document.
2. (usu. the Signet) the royal seal formerly used for special purposes in England and Scotland, and in Scotland later as the seal of the Court of Session.
Origin
ME: from OFr., or from med. L. signetum, dimin. of signum 'token, seal'.