Breadcrumb Home > Thesaurus > W Synonyms of white horehound Find synonyms for: Noun1. common horehound, white horehound, Marrubium vulgare, horehoundusage: European aromatic herb with hairy leaves and numerous white flowers in axillary cymes; leaves yield a bitter extract use medicinally and as flavoringWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. ✖ Related Content Daily Word Quiz: temporize Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language