Breadcrumb Home > Dictionary > Index M marplot: Meaning and Definition of Find definitions for: mar•plot Pronunciation: (mär'plot"), [key] — n. a person who mars or defeats a plot, design, or project by meddling. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. marouflage Marq. ✖ Related Content Daily Word Quiz: acronym Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language