/ Dictionary / Index M mopboard: Meaning and Definition of Find definitions for: mop•board Pronunciation: (mop'bôrd", -bōrd"), [key] — n. baseboard (def. 1). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: mopboard (Thesaurus) mop mope Related Content Daily Word Quiz: prevalent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language