/ Dictionary / Index N No. 1: Meaning and Definition of Find definitions for: No. 1 Pronunciation: (num'bur wun'), [key] number one. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. no NOAA Related Content Daily Word Quiz: belligerent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language