belladonna(redirected from belladonna leaf)
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1. A poisonous perennial herb (Atropa belladonna) native to Eurasia and northern Africa and naturalized in parts of North America, having nodding, purplish-brown, bell-shaped flowers and glossy black berries. Also called deadly nightshade.
2. An alkaloidal extract or tincture derived from this plant and used in medicine.
[Italian : bella, feminine of bello, beautiful (from Latin bellus; see deu- in Indo-European roots) + donna, lady; see Donna (the plant perhaps being so called because women of Italian courts during the Renaissance are said to have used the juice of belladonna berries to make their eyes more attractive by dilating their pupils) .]
1. (Plants) either of two alkaloid drugs, atropine or hyoscyamine, obtained from the leaves and roots of the deadly nightshade
2. (Plants) another name for deadly nightshade
[C16: from Italian, literally: beautiful lady; supposed to refer to its use by women as a cosmetic]
bel•la•don•na(ˌbɛl əˈdɒn ə)
1. Also called deadly nightshade. a poisonous plant, Atropa belladonna, of the nightshade family, having purplish red flowers and black berries.
[1590–1600; < Italian bella donna literally, fair lady]
Any of several alkaloids produced by the herb known as deadly nightshade. The alkaloids are poisonous but are also used in medicine, for example to increase the heart rate and treat Parkinson's disease.
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|Noun||1.||belladonna - perennial Eurasian herb with reddish bell-shaped flowers and shining black berries; extensively grown in United States; roots and leaves yield atropine|
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.||belladonna - an alkaloidal extract or tincture of the poisonous belladonna plant that is used medicinally|
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
belladonna[ˈbɛləˈdɒnə] n (Bot, Med) → belladonna
n. belladona, yerba medicinal cuyas hojas y raíces contienen atropina y alcaloides.