/ Dictionary / Index J jimson weed: Meaning and Definition of Find definitions for: jim'son weed" Pronunciation: ( jim'sun), [key] a coarse, rank-smelling weed, Datura stramonium, of the nightshade family, having oaklike, poisonous leaves and tubular white or lavender flowers. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: jimsonweed (Thesaurus) jimp jin Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language