瘤鸭 liúyā knob-billed duck Definitions Defs Origin Strokes Stroke Words Sentences Sents 瘤 liú noun tumor tumor; lump formed by abnormal growth of body tissue鸭 鴨 yā noun duck (bound form) duck; any of various swimming birds of the family Anatidae, usually referring to the domestic duck 鸭子 yāzi