/ Dictionary / Index B bitternut: Meaning and Definition of Find definitions for: bit•ter•nut Pronunciation: (bit'ur-nut"), [key] — n. a hickory, Carya cordiformis, of the eastern and southern U.S., bearing a smooth, gray, bitter seed. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: bitternut (Thesaurus) bittern bitter orange Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language