WordNet sense 1 (perennial Eurasian herb with reddish bell-shaped flowers and shining black berries; extensively grown in United States; roots and leaves yield atropine):

belladonna, Atropa belladonna, belladonna plant

WordNet sense 2 (poisonous perennial Old World vine having violet flowers and oval coral-red berries; widespread weed in North America):

bittersweet, bittersweet nightshade, climbing nightshade, poisonous nightshade, Solanum dulcamara, woody nightshade