beak General term for a rigid, projecting oral structure. All monotremes, birds (for which the term "bill" is often used), and turtles, as well as some fish. cephalopods, and insects, are beaked, as were many dinosaurs. Beak shapes and sizes are usually highly specialized. Related category ZOOLOGY Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) |