The person that is below the director in terms of superiority. Generally one of the people with a headset. He/she will be at rehearsals to run them if the director is busy. He/she is generally a nice person unless you piss them off. They are the ones responsible for calling cues during a show, pulling the curtain, sometimes moving set pieces. Without him/her and the rest of the stage crew there wouldn't be a show.
by Hello! Goodbye! August 04, 2012