Quesal \Que*sal"\, n. (Zool.) The long-tailed, or resplendent, trogon ({Pharomachus mocinno}, formerly {Trogon resplendens}), native of Southern Mexico and Central America. Called also {quetzal}, and {golden trogon}. [1913 Webster] Note: The male is remarkable for the brilliant metallic green and gold colors of his plumage, and for his extremely long plumes, which often exceed three feet in length. [1913 Webster]