ˈ ̷ ̷ˌ ̷ ̷ noun
Etymology: cow (I) + bane
: any of several poisonous plants of the family Umbelliferae: as
a.
(1) : the European water hemlock
(2) : an American water hemlock ; especially : spotted cowbane
b. : a hog fennel ( Oxypolis rigidior ) that is widespread in wet lowlands in the eastern and central United States