water hemlock

water-hemlock的词性：
n.（名词）

1. Any of several poisonous, heavy-scented, perennial herbs of the genus Cicuta, especially C. maculata, of marshy areas in eastern and central North America, having compound umbels of small white flowers and bipinnately compound leaves.
毒芹：几种毒芹 属的有毒、味浓、多年生草本植物之任一种，尤指产于北美中部和东部的沼泽地区的 美洲斑点毒芹 ，生有复状伞形小白花和二回羽状复叶