/ Thesaurus / W Synonyms of white walnut Find synonyms for: Noun1. butternut, butternut tree, white walnut, Juglans cinerea, walnut, walnut treeusage: North American walnut tree having light-brown wood and edible nuts; source of a light-brown dyeWordNet 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