conium

co·ni·um

noun \kō-ˈnī-əm, ˈkō-nē-\

Definition of CONIUM

1

a capitalized : a genus of poisonous herbs (family Umbelliferae) that have spotted stems, large divided leaves and white flowers and that include the poison hemlock b : a plant of the genus Conium

2

: the dried full-grown but unripe fruit of the poison hemlock containing coniine and its methyl derivative and used as a narcotic and sedative