/ Dictionary / Index A AARP: Meaning and Definition of Find definitions for: AARP Pronunciation: [key] American Association of Retired Persons. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: aarp (Thesaurus) Aaron's rod A.A.S. Related Content Daily Word Quiz: frugal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language