"belladonna" in the noun sense
1. belladonna, belladonna plant, deadly nightshade, Atropa belladonna
perennial Eurasian herb with reddish bell-shaped flowers and shining black berries extensively grown in United States roots and leaves yield atropine
2. belladonna
an alkaloidal extract or tincture of the poisonous belladonna plant that is used medicinally
Source: WordNet® (An amazing lexical database of English)
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