胆红素 dǎnhóngsù bilirubin Origin Definitions Defs Strokes Stroke Words Sentences Sents 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.红 紅 hóng adjective red the color of blood; having a reddish color素 sù noun element (bound form) essential part; element; constituent; basic nature