rhubarb pie(n = noun.food) - pie containing diced rhubarb and much sugar;
is a kind of pie

apple pie, blueberry pie, bog rhubarb, boston cream pie, chinese rhubarb, cottage pie, cow pie, custard pie, deep-dish pie, garden rhubarb, himalayan rhubarb, indian rhubarb, kidney pie, lemon meringue pie, meat pie, mince pie, mud pie, pecan pie, perigord pie, pie, pie chart, pie crust, pie eyed, pie plant, pie shell, pizza pie, pork pie, pumpkin pie, red-veined pie plant, rhubarb, rhubarb plant, sea pie, shepherd's pie, shoofly pie, squash pie, steak and kidney pie, tamale pie, umble pie