/ Dictionary / Index M Monmouthshire: Meaning and Definition of Find definitions for: Mon•mouth•shire Pronunciation: (mon'muth-shēr", -shur), [key] — n. a historic county in E Wales, now part of Gwent, Mid Glamorgan, and South Glamorgan. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Monmouth Monnet Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language