Definitions for "Greenroom"
The retiring room of actors and actresses in a theater.
A room backstage, occasionally licensed, in which the company can sit and relax before, during or after a show. There'll always be a kettle there, if nothing else! Not as common as they used to be.
A room near the stage where actors may sit comfortably before and after the show or during scenes in which they do not appear. This room is traditionally painted green; the custom arose in England, where the color was thought to be soothing.