/ Dictionary / Index F Fionn: Meaning and Definition of Find definitions for: Fionn Pronunciation: (fyn, fin), [key] — n. Irish Legend. Finn. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Fiona fiord Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language