/ Dictionary / Index M Middleborough: Meaning and Definition of Find definitions for: Mid•dle•bor•ough Pronunciation: (mid'l-bûr"ō, -bur"ō), [key] — n. a town in SE Massachusetts. 16,404. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. middle-born middlebreaker Related Content Daily Word Quiz: clairvoyant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language