| Noun | 1. | gnawing mammal - relative large gnawing animals; distinguished from rodents by having two pairs of upper incisors specialized for gnawingeutherian, eutherian mammal, placental, placental mammal - mammals having a placenta; all mammals except monotremes and marsupials Duplicidentata - in former classifications considered a suborder of Rodentia coextensive with the order Lagomorpha: gnawing animals Lagomorpha, order Lagomorpha - rabbits; hares; pikas; formerly considered the suborder Duplicidentata of the order Rodentia leporid, leporid mammal - rabbits and hares mouse hare, pika, rock rabbit, cony, coney - small short-eared burrowing mammal of rocky uplands of Asia and western North America |