A diminutive of the male given name Trevor

(mail) Initialism of return to sender. Used on a misaddressed envelope to have the post office return the letter to the sender.

(computing, Internet) A small piece of JavaScript code stored as a URL within a bookmark.

The act of personating: the playing of a role or portrayal of a character / The roles or characters so played / (UK) The act of voting in an election by impersonating someone else.