signature

Your signature is the way you sign your name, or a distinctive characteristic. (noun)

When you sign your name on a piece of paper, this is an example of your signature.
When you have a dance move that everyone attributes to you, this is an example of a signature dance move.

See signature in Webster's New World College Dictionary

noun

a person's name written by that person; also, a representation of this in a mark, stamp, deputy's handwriting, etc.
the act of signing one's name
an identifying characteristic or mark
that part of a doctor's prescription telling the patient how to use the medicine prescribed: usually marked S or Sig.
theme song (sense )
Music
1. key signature
2. time signature
Printing
1. a large sheet upon which are printed a number of pages in some multiple of four, and which, when folded to page size, forms one section of a book
2. a letter or number at the bottom of the first page in such a sheet showing in what order that section is to be gathered for binding

adjective

☆ designating or of a product, as clothing, which is distinguished by a label bearing the stylized signature of its designer
typical of or identified with a person, place, etc.: an actor's signature mannerism, a restaurant's signature entree

See signature in American Heritage Dictionary 4

(sĭgˈnə-chər)

noun

One's name as written by oneself.
The act of signing one's name.
A distinctive mark, characteristic, or sound indicating identity: A surprise ending is the signature of an O. Henry short story.
Abbr. Sig. or S. Medicine The part of a physician's prescription containing directions to the patient.
Music
a. A sign used to indicate key.
b. A sign used to indicate tempo.
Printing
a. A letter, number, or symbol placed at the bottom of the first page on each sheet of printed pages of a book as a guide to the proper sequence of the sheets in binding.
b. A large sheet printed with four or a multiple of four pages that when folded becomes a section of the book.