noun: (dated, slang, theater) Clipping of supernumerary.: An extra or walk-on. [A person who works in a group, association, or public office without forming part of the regular staff (the numerary).]
noun: (informal) Abbreviation of superintendent. [A person who is authorized to supervise, direct or administer something.]
noun: (informal) Abbreviation of supervisor. [(management) A person with the official task of overseeing the work of a person or group, or of other operations and activities.]
noun: (Cambridge University slang) Clipping of supervision. [(uncountable) The act or instance of supervising.]
noun: (fiction) Short for superhero. [Any kind of fantasy/science fiction crime-fighting character, often with supernatural powers or equipment, in popular children's and fantasy literature.]