belladonna

belladonna /bel·la·don·na/ (bel?ah-don´ah) the deadly nightshade, Atropa belladonna, a perennial plant containing various anticholinergic alkaloids, including atropine, hyoscyamine, and scopolamine, which are used medicinally; however, the plant or its alkaloids can cause poisoning.

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bel·la·don·na (bl-dn)

n.

1. A poisonous Eurasian perennial herb having usually solitary, purplish-brown, bell-shaped flowers and glossy black berries. Also called deadly nightshade.

2. An alkaloidal extract or tincture derived from this plant.

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belladonna

Atropa belladonna (deadly nightshade), a plant that is the source of various alkaloids, e.g. atropine, hyoscyamine, etc.

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belladonna leaf

the dried leaves and fruiting tops of Atropa belladonna, used as an anticholinergic in the management of gastrointestinal disorders.

belladonna poisoning

a severe toxic condition due to overdosage of belladonna or accidental ingestion of large amounts of the drug. Signs include dryness of the mouth, thirst, dilated pupils, tachycardia, fever and stupor.