signature
UK: ˈsɪɡnətʃə | US: ˈsɪɡnətʃər
n. a person's name written in a distinctive way as a form of identification or authorization
n. a distinctive mark, characteristic, or sound indicating identity
n. (Music) a short section of music used to identify a broadcast or recording
The word "signature" originates from Latin signatura, derived from signare ("to mark" or "to sign"), which itself comes from signum ("mark" or "token"). The suffix -ature (later -ature in Old French) denotes the result of an action, turning the verb "to sign" into a noun meaning "the act or result of signing." Over time, it evolved to specifically refer to a person's handwritten name as a mark of authenticity. The logic follows: "sign" (to mark) + "ature" (result) = "the result of marking one's name."
She added her signature at the bottom of the contract.
The artist’s signature style is easily recognizable.
The radio station plays its signature jingle every hour.
The document is invalid without an official signature.
His signature dish is a spicy seafood pasta.