Webster's English Dictionaryrodent a. [L. rodens, -entis, p. pr. of rodere to gnaw. See Rase, v. t., and cf. Rostrum.]1. Gnawing; biting; corroding; (Med.) applied to a destructive variety of cancer or ulcer. () 2. (Zol.) Gnawing. () n. (Zol.) One of the Rodentia. ()