Breadcrumb Home > Thesaurus > W Synonyms of whetstone Find synonyms for: Noun1. whetstone, stoneusage: a flat stone for sharpening edged tools or knivesWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of whetstone (Dictionary) ✖ Related Content Daily Word Quiz: tendentious Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language