Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio.
a square made of letters so arranged that they spell the same words in the same order horizontally and vertically
Used by arrangement with John Wiley & Sons, Inc.
noun GamesThe 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 set of words arranged in a square such that they read the same horizontally and vertically. Also called acrostic.