Breadcrumb Home > Thesaurus > M Synonyms of mulch Find synonyms for: Noun 1. mulch, protective covering, protective cover, protection usage: a protective covering of rotting vegetable matter spread to reduce evaporation and soil erosion Verb 1. mulch, cover usage: cover with mulch; "mulch the flowerbeds" WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of mulch (Dictionary) 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: spurious Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language