noun

1. A person's name, written by that person, used as identification or to signify approval of accompanying material, such as a legal contract.

2. An act of signing one's name; an act of producing a signature.

3. The part of a doctor’s prescription containing directions for the patient.

Synonyms: sig, siggy

adjective

1. Distinctive, characteristic, indicative of identity.

   “Rabbit in mustard sauce is my signature dish.”