/ Dictionary / Index R R.C.A.F.: Meaning and Definition of Find definitions for: R.C.A.F. Pronunciation: [key] Royal Canadian Air Force. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. R.C. R.C.Ch. Related Content Daily Word Quiz: censure Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language