New Castile definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
New Castile definition by American Heritage Dictionary
A historical region of central Spain that combined with Old Castile to the north to form the kingdom of Castile. It was united with Aragon after the marriage of Ferdinand and Isabella (1469).