/ Dictionary / Index R Runnymede: Meaning and Definition of Find definitions for: Run•ny•mede Pronunciation: (run'i-mēd"), [key] — n. a meadow on the S bank of the Thames, W of London, England: reputed site of the granting of the Magna Charta by King John, 1215. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. runny runoff Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language