a poisonous solanaceous European plant, Hyoscyamus niger, with sticky hairy leaves and funnel-shaped greenish flowers: yields the drug hyoscyamine 
WordReference Random House Unabridged Dictionary of American English © 2025
hen•bane 
(hen′bān′),USA pronunciation n. 
- Plant Biologyan Old World plant, Hyoscyamus niger, of the nightshade family, having sticky, hairy fetid foliage and greenish-yellow flowers, and possessing narcotic and poisonous properties esp. destructive to domestic fowls.
 
- 1250–1300; Middle English; see hen, bane
 
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'henbane' also found in these entries (note: many are not synonyms or translations):