Breadcrumb Home > Dictionary > Index R R.C.S.: Meaning and Definition of Find definitions for: R.C.S. Pronunciation: [key] Royal College of Surgeons. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. rcpt. Rct ✖ Related Content Daily Word Quiz: supercilious Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language