alias

Universal Words adverb, noun adverb used when a person, especially a criminal or an actor, is known by two names: Mick Clark, alias Sid Brown * Inspector Morse, alias John Thaw (= John Thaw plays the part of Inspector Morse) * John Thaw, alias Inspector Morse of the famous TV series noun a false or different name, especially one that is used by a criminal: He checked into the hotel under an alias.