/ Dictionary / Index S sainfoin: Meaning and Definition of Find definitions for: sain•foin Pronunciation: (sān'foin), [key] — n. a Eurasian plant, Onobrychis viciifolia, of the legume family, having pinnate leaves and clusters of pink flowers, used for forage. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: sainfoin (Thesaurus) sain saint Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language