/ Thesaurus / W Synonyms of western birch Find synonyms for: Noun1. swamp birch, water birch, mountain birch, Western paper birch, Western birch, Betula fontinalis, birch, birch treeusage: birch of western United States resembling the paper birch but having brownish barkWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: pundit Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language