/ Thesaurus / R Synonyms of rough horsetail Find synonyms for: Noun1. scouring rush, rough horsetail, Equisetum hyemale, Equisetum hyemale robustum, Equisetum robustum, horsetailusage: evergreen erect horsetail with rough-edged stems; formerly used for scouring utensilsWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: penurious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language