cowbane
/ˈkaʊbeɪn/noun
1- any of a number of tall poisonous plants of the parsley family, growing in swampy or wet habitats毒芹：
1.1
- another term for WATER HEMLOCK.
1.2
- a North American plant (Oxypolis rigidior, family Umbelliferae).更坚挺牛芹（毒牛芹的一种）（拉丁名Oxypolis rigidior,伞形科）。
词源
late 18th cent.: from COW1 + BANE, because it is poisonous to grazing cattle.