A box elder growing in a canyon.Licensed from iStockPhoto
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio.
a medium-sized, fast-growing North American maple (Acer negundo), with compound leaves
Used by arrangement with John Wiley & Sons, Inc.
nounThe American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
A North American maple tree (Acer negundo) having pinnately compound leaves with coarsely toothed to lobed leaflets. Also called ash-leaved maple.