/ Dictionary / Index F Fitzsimmons: Meaning and Definition of Find definitions for: Fitz•sim•mons Pronunciation: (fit-sim'unz, fits-), [key] — n. (“Sunny Jim”), 1874–1966, U.S. racehorse trainer. 1862–1917, English boxer: world heavyweight champion 1897–99. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Fitzroy Fiume Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language