any of certain perennial herbs of the genus Aletris in the lily family,especially A. farinosa of eastern North America,having racemes of small white flowers and rootstocks formerly used in medicine to treat colic是什么意思_any of certain perennial herbs of the genus Aletris in the lily family,especially A. farinosa of eastern North America,having racemes of small white flowers and rootstocks formerly used in medicine to treat colic在线翻译_英语_读音_用法_例句