咬牙 Traditional form: 咬牙 Pinyin (reading): yǎoyá Definitions: to clench one's teeth to grind the teeth gnaw Characters: 咬 - to bite, to gnaw 牙 - tooth, molar; fang, tusk; serrated Traditional characters: 咬 - to bite, to gnaw 牙 - tooth, molar; fang, tusk; serrated