1. a plate, often decorated with a blue willow pattern, divided by ridges into sections for holding apart several kinds of food.
2. Also called blue' plate" spe'cial. a specially priced main course, as of meat and vegetables, listed as an item on a menu, esp. in an inexpensive restaurant.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.