WASHBOARD Scrabble 18 Words With Friends 18 Definition noun device consisting of a corrugated surface to scrub clothes on. noun protective covering consisting of a broad plank along a gunwale to keep water from splashing over the side. — synonyms: splashboard See all 204 words you can make from WASHBOARD → 9-letter words Words starting with W Words ending with D ← Unscramble different letters