dressing room(n = noun.artifact) - a room in which you can change clothes;
is a kind of room
is a part of bathhouse, bathing machine, abode, domicile, dwelling, dwelling house, habitation, home, house, theater, theatre

adjoining room, amber room, anchovy dressing, baby's room, back room, bedsitting room, billiard room, bleu cheese dressing, blue cheese dressing, boiler room, breathing room, chat room, child's room, city room, clean room, common room, conference room, connecting room, control room, cross dressing, cutting room, dead room, dining room, dorm room, dormitory room, drawing room, dressing, dressing case, dressing down, dressing gown, dressing sack, dressing sacque, dressing station, dressing table, elbow room, emergency room, engine room, family room, french dressing, french dressing for fruit salad, front room, furnace room, game room, gun room, half-and-half dressing, home room, hospital room, hotel room, italian dressing, ladies' room, laminar flow clean room, lecture room, living room, locker room, lorenzo dressing, lumber room, medical dressing, men's room, mineral dressing, morning room, motel room, operating room, ore dressing, oyster dressing, powder room, pump room, reading room, rec room, reception room, recovery room, recreation room, rest room, room, room access, room clerk, room decorator, room light, room rate, room temperature, roquefort dressing, rumpus room, russian dressing, salad dressing, sea room, seating room, sewing room, shipping room, shower room, sitting room, sleeping room, smoking room, squad room, standing room, standing room only, steam room, still room, stock room, storage room, strong room, surgical dressing, sweat room, television room, test room, testing room, thousand island dressing, top dressing, tv room, waiting room, war room, wash room, water dressing, white room, wiggle room, window dressing, withdrawing room