belladonna

Definitions of belladonna
  1. noun
    perennial Eurasian herb with reddish bell-shaped flowers and shining black berries; extensively grown in United States; roots and leaves yield atropine
    synonyms: Atropa belladonna, belladonna plant, deadly nightshade
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    type of:
    herb, herbaceous plant
    a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests
  2. noun
    an alkaloidal extract or tincture of the poisonous belladonna plant that is used medicinally
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    type of:
    atropine
    a poisonous crystalline alkaloid extracted from the nightshade family; used as an antispasmodic and to dilate the eye pupil; also administered in large amounts as an antidote for organophosphate nerve agents or organophosphate insecticides
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