deadly nightshade

(noun) perennial Eurasian herb with reddish bell-shaped flowers and shining black berries; extensively grown in United States; roots and leaves yield atropine. Synonyms: belladonna, belladonna plant, deadly nightshade, Atropa belladonna.

(noun) poisonous perennial Old World vine having violet flowers and oval coral-red berries; widespread weed in North America. Synonyms: bittersweet, bittersweet nightshade, climbing nightshade, deadly nightshade, poisonous nightshade, woody nightshade, Solanum dulcamara.