Definition of "Upstage" :

noun: the rear part of the stage

verb: steal the show, draw attention to oneself away from someone else

"When the dog entered the stage, he upstaged the actress."

verb: move upstage, forcing the other actors to turn away from the audience

verb: treat snobbishly, put in one's place

adjective: remote in manner

"He was upstage with strangers."

adjective: of the back half of a stage

"She crossed to the upstage chair forcing the lead to turn his back to the audience."

adverb: at or toward the rear of the stage

"The dancers were directed to move upstage."