poison hemlock

Noun poison hemlock has 1 sense

• poison hemlock(n = noun.plant) california fern, conium maculatum, hemlock, nebraska fern, poison parsley, winter fern - large branching biennial herb native to Eurasia and Africa and adventive in North America having large fernlike leaves and white flowers; usually found in damp habitats; all parts extremely poisonous;
is a member of conium, genus conium
is a kind of poisonous plant