/ Thesaurus / R Synonyms of red ash Find synonyms for: Noun1. red ash, downy ash, Fraxinus pennsylvanica, ash, ash treeusage: smallish American tree with velvety branchlets and lower leaf surfacesWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language