/ Thesaurus / C Synonyms of california box elder Find synonyms for: Noun1. California box elder, Acer negundo Californicum, box elder, ash-leaved maple, Acer negundousage: maple of the Pacific coast of the United States; fruits are white when matureWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: jaundice Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language