尿胆素 niàodǎnsù urobilin Definitions Defs Origin Strokes Stroke Words Sentences Sents 尿 niào noun urine urine; the liquid waste filtered from the body by the kidneys胆 膽 dǎn noun gallbladder The gallbladder; a bitter organ located near the liver that aids in digestion; also referred to as 胆囊 dǎnnáng.素 sù noun element (bound form) essential part; element; constituent; basic nature