What is the meaning of Signature?

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

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

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

Signs on the stave indicating key and tempo, composed of the key signature and the time signature.

A group of four (or a multiple of four) sheets printed such that, when folded, they become a section of a book.

A pattern used for matching the identity of a virus, the parameter types of a method, etc.

Data attached to a message that guarantees that the message originated from its claimed source.

A mark or sign of implication.

A distinguishing feature or product.

A tuple specifying the sign of coefficients in any diagonal form of a quadratic form.

A resemblance between the external character of a disease and those of some physical agent, for instance, that existing between the red skin of scarlet fever and a red cloth; supposed to indicate this agent in the treatment of the disease.

Text (or images, etc.) appended to a user's emails, newsgroup posts, forum posts, etc. as a way of adding a personal touch or including contact details.

Distinctive, characteristic, indicative of identity.

To sign with one's signature, to write one's signature on.

signature (a person's name written in their own handwriting)

the act of signing

vocative masculine singular of signātūrus

Source: wiktionary.org