‖n. pl. [ NL., fr. Gr. 'odoy`s, 'odo`ntos, a tooth + &unr_;, &unr_;, a bird. ] (Paleon.) A group of Mesozoic birds having the jaws armed with teeth, as in most other vertebrates. They have been divided into three orders: Odontolcae, Odontotormae, and Saururae. [ 1913 Webster ]