/ Dictionary / Index P pignut: Meaning and Definition of Find definitions for: pig•nut Pronunciation: (pig'nut"), [key] — n. the nut of the brown hickory, Carya glabra, of North America. the tree itself. the tuber of a European plant, Conopodium denudatum. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: pignut (Thesaurus) pignus pig-out Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language