Breadcrumb Home > Thesaurus > W Synonyms of washboard Find synonyms for: Noun 1. washboard, device usage: device consisting of a corrugated surface to scrub clothes on 2. washboard, splashboard, protective covering, protective cover, protection usage: protective covering consisting of a broad plank along a gunwale to keep water from splashing over the side WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of washboard (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: odaysuiz Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language