/ Thesaurus / O Synonyms of oregon ash Find synonyms for: Noun1. Oregon ash, Fraxinus latifolia, Fraxinus oregona, ash, ash treeusage: timber tree of western North America yielding hard light wood; closely related to the red ashWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: devout Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language