龙胆草 lóngdǎncǎo rough gentian Origin Definitions Defs Strokes Stroke Words Sentences Sents 龙胆 龍膽 lóngdǎn rough gentian (bound form) rough gentian; Japanese gentian; a perennial herb with blue-purple flowers and roots used in traditional medicine, also known as 龙胆草 lóngdǎncǎo or 观音草 guānyīncǎo草 cǎo noun grass grass; straw; herbs; plants with non-woody stems