/ Dictionary / Index I Indy 500: Meaning and Definition of Find definitions for: Indy 500 Pronunciation: [key] — Informal. Informal. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Indy, d' -ine Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language