/ Dictionary / Index N NAA: Meaning and Definition of Find definitions for: NAA Pronunciation: [key] National Aeronautic Association. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. na NAACP Related Content Daily Word Quiz: banshee Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language