Your signature is the way you sign your name, or a distinctive characteristic.
(noun)See signature in Webster's New World College Dictionary
noun
Origin: LL signatura < L signare: see signatory
adjective
See signature in American Heritage Dictionary 4
noun
Origin:
Origin: French
Origin: , from Old French
Origin: , from Medieval Latin signātūra
Origin: , from Latin signātus
Origin: , past participle of signāre, to mark
Origin: , from signum, sign; see sign
.Learn more about signature