bookplate 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.
a label, often specially designed, pasted in a book to identify its owner
bookplate definition by American Heritage Dictionary
A label bearing the owner's name or other identification that is pasted usually on the inside cover of a book. Also called ex libris.