齧歯 げっし Meanings Noun rodent See also: 齧歯動物 (げっしどうぶつ). Kanji 齧 gnaw; nibble; munch. Read as ゲツ. 歯 tooth. Read as シ. Words containing 齧歯 齧歯類 (げっしるい) rodents 齧歯動物 (げっしどうぶつ) gnawing animal Jinuma: Japanese Dictionary · Word lists