/ Thesaurus / B Synonyms of black henbane Find synonyms for: Noun1. henbane, black henbane, stinking nightshade, Hyoscyamus niger, herb, herbaceous plantusage: poisonous fetid Old World herb having sticky hairy leaves and yellow-brown flowers; yields hyoscyamine and scopolamineWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: devout Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language