Longman Dictionary of Contemporary English
The Collaborative International Dictionary
Belladonna \Bel`la*don"na\, n. [It., literally fine lady; bella beautiful + donna lady.] (Bot.)
An herbaceous European plant ( Atropa belladonna) with reddish bell-shaped flowers and shining black berries. The whole plant and its fruit are very poisonous, and the root and leaves are used as powerful medicinal agents. Its properties are largely due to the alkaloid atropine which it contains. Called also deadly nightshade.
A species of Amaryllis ( Amaryllis belladonna); the belladonna lily.
Wiktionary
n. The plant ''Atropa belladonna'', a perennial shrub of the nightshade family that contains high concentrations of the alkaloid atropine which can be deadly if taken in excess.
WordNet
n. perennial Eurasian herb with reddish bell-shaped flowers and shining black berries; extensively grown in United States; roots and leaves yield atropine [syn: belladonna, Atropa belladonna]
poisonous perennial Old World vine having violet flowers and oval coral-red berries; widespread weed in North America [syn: bittersweet, bittersweet nightshade, climbing nightshade, poisonous nightshade, woody nightshade, Solanum dulcamara]
Wikipedia
Deadly Nightshade is a 1953 British crime drama film directed by John Gilling. It stars Emrys Jones, Zena Marshall and John Horsely.
Usage examples of "deadly nightshade".
In rapid order Moon Boy became poison ivy, a patch of deadly nightshade, and a clump of red berries I wouldn't have approached with a barge pole.
One jar puzzled him, for according to the label it contained deadly nightshade.
You'll get thrown out of the Deadly Nightshade Gardening Club if you aren't careful.
It might be a weak draught of the henbane that Ragnhild used on her husband, or of the deadly nightshade berry.
For, looking out of a tiny version of Hermione's face, were the shiny black, deadly nightshade eyes of Rannaldini.
In rapid order Moon Boy became poison ivy, a patch of deadly nightshade, and a clump of red berries I wouldn'.
This is henbane, a close relative of deadly nightshade with some of my own ingredients mixed in, but I'm usin' only enough to loosen his tongue and impair his judgement.