/ Dictionary / Index R r-color: Meaning and Definition of Find definitions for: r-col•or Pronunciation: (är'kul"ur), [key] — n. Phonet. the auditory quality of an r-sound given to a vowel, resulting from retroflex articulation or bunching of the tongue. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. R.C.N. R.C.P. Related Content Daily Word Quiz: sequester Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language