belladonna

/ˈbɛləˌdɑnə/

Other forms: belladonnas

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

   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
   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