n. [ Prob. from Cadillac, a French town. ] A large pear, shaped like a flattened top, used chiefly for cooking. Johnson.
2. [ From Cadillac, the high-end expensive line of automobiles made by General Motors, often thought of as the best American-made automobile. ] The best; -- metaphorical, from the automobile. Often used in the phrase “the Cadillac of . . . ” [ PJC ]