Paraph

(n.) A flourish made with the pen at the end of a signature. In the Middle Ages, this formed a sort of rude safeguard against forgery.

Paraph - Other Definitions

(n.) A flourish made with the pen at the end of a signature. In the Middle Ages, this formed a sort of rude safeguard against forgery.
(v. t.) To add a paraph to; to sign, esp. with the initials.