/ Dictionary / Index R R-rated: Meaning and Definition of Find definitions for: R-rat•ed Pronunciation: (är'rā"tid), [key] — adj. (of a motion picture) suitable for those under 17 years of age only when accompanied by an adult. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. R.R. -rrhagia Related Content Daily Word Quiz: pristine Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language