/ Thesaurus / B Synonyms of box elder Find synonyms for: Noun1. box elder, ash-leaved maple, Acer negundo, mapleusage: common shade tree of eastern and central United StatesWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: precarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language