嘴啃泥 Traditional form: 嘴啃泥 Pinyin (reading): zuǐkěnní Definitions: to fall flat on one's face Characters: 嘴 - mouth, lips 啃 - to gnaw, to chew, to bite 泥 - mud, earth, clay; plaster, paste Traditional characters: 嘴 - mouth, lips 啃 - to gnaw, to chew, to bite 泥 - mud, earth, clay; plaster, paste