box elder boxed-in • box-elder aphid · · · Info · Definitions · Synonyms · Characters · · box elder · · Text Common · · Latin · · Scripts 9 · · Length 3 · · Syllables Definitions · · · (noun) common shade tree of eastern and central United States. Synonyms: box elder, ash-leaved maple, Acer negundo. · · Noun Definition 1 Synonyms · · · ash-leaved maple · · Synonym 1 acer negundo · · Synonym 2 Characters · · space U+0020 b latin small letter b U+0062 d latin small letter d U+0064 e latin small letter e U+0065 l latin small letter l U+006C o latin small letter o U+006F r latin small letter r U+0072 x latin small letter x U+0078