Breadcrumb Home > Dictionary > Index S stum: Meaning and Definition of Find definitions for: stum Pronunciation: (stum), [key] — n., v., stummed, stum•ming. —n. unfermented or partly fermented grape juice. wine in which increased fermentation has taken place because of the addition of stum. —v.t. to increase the fermentation of (wine) by adding stum. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. stultify stumble TrendingHere are the facts and trivia that people are buzzing about. Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 12 Steps to a New Year New Year's Resolution to Slim Down? Martin Luther King Speeches Books of the Bible: Old Testament Books in Order ✖ Related Content Daily Word Quiz: recidivism Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language