1. (v. t.) Gnawing; biting; corroding; (Med.) applied to a destructive variety of cancer or ulcer.

2. (v. t.) Gnawing.

3. (v. t.) of or pertaining to the Rodentia.

4. (n.) One of the Rodentia.

amphibian aquatic biped canine cannibal carnivore cosmopolite feline gnawer herbivore insectivore invertebrate mammal mammalian marsupial marsupialian mouselike mousy omnivore primate quadruped ratty reptile rodential ruminant scavenger ungulate varmint vermin verminous vertebrate