/ Dictionary / Index N number four iron: Meaning and Definition of Find definitions for: num'ber four' i"ron Pronunciation: [key] — Golf. Golf. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. number five iron number four wood Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language