Breadcrumb Home > 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: derogate Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language