瘤鸭 Traditional form: 瘤鴨 Pinyin (reading): liúyā Definitions: (bird species of China) knob-billed duck (Sarkidiornis melanotos) Characters: 瘤 - tumor, lump, goiter 鸭 - duck; Anas species (various) Traditional characters: 瘤 - tumor, lump, goiter 鴨 - duck; Anas species (various)