a reflective surface used by a boastful, self-conscious male who is vainly preoccupied with his own machismo. Usually a glass surface with a coating of silver, framed, and located in a bedroom or bathroom. Used by vain individuals who think they are saving the world from destruction; that is, a hero.
John put on his fireman's hat and glanced in the mirrow to make sure he looked like a hero.
We all gave a sneero to the hero looking at himself in the mirrow.