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Noun gnawer has 1 sense
rodent, gnawer, gnawing animal - relatively small gnawing animals having a single pair of constantly growing incisor teeth specialized for gnawing--1 is a kind of placental, placental mammal, eutherian, eutherian mammal
 --1 is a member of Rodentia, order Rodentia
 --1 has particulars:
 |  | mouse; rat; murine; water rat; New World mouse; muskrat, musquash, Ondatra zibethica; round-tailed muskrat, Florida water rat, Neofiber alleni; cotton rat, Sigmodon hispidus; wood rat, wood-rat; hamster; gerbil, gerbille; lemming; porcupine, hedgehog; jumping mouse; jerboa; dormouse; squirrel; prairie dog, prairie marmot; marmot; beaver; mountain beaver, sewellel, Aplodontia rufa; cavy; mara, Dolichotis patagonum; capybara, capibara, Hydrochoerus hydrochaeris; agouti, Dasyprocta aguti; paca, Cuniculus paca; mountain paca; coypu, nutria, Myocastor coypus; chinchilla, Chinchilla laniger; mountain chinchilla, mountain viscacha; viscacha, chinchillon, Lagostomus maximus; abrocome, chinchilla rat, rat chinchilla; mole rat; mole rat; sand rat | 
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