- A genus of biennial, poisonous, white-flowered,
umbelliferous plants, bearing ribbed fruit ("seeds") and decompound
leaves. - The common hemlock (Conium maculatum, poison hemlock,
spotted hemlock, poison parsley), a roadside weed of Europe, Asia, and
America, cultivated in the United States for medicinal purpose. It is
an active poison. The leaves and fruit are used in medicine.
Definition
[ n.]