/ Dictionary / Index B bitterweed: Meaning and Definition of Find definitions for: bit•ter•weed Pronunciation: (bit'ur-wēd"), [key] — n. any of various plants containing a bitter principle, as those of the genus Picris. a sneezeweed, Helenium amarum. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: bitterweed (Thesaurus) bittersweet bitterwood Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language