Deadly nightshade is the common name for atropa belladonna, a perennial herbaceous plant whose foliage and berries are extremely toxic and cause a bizarre delirium and hallucinations. Witches were believed to use a mixture of deadly nightshade, opium poppy and other plants in making flying ointment.
Usage
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This is an etymology page: a page detailing the origins of terminology used in the series in regards to real world culture and history.
