cuff link 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 pair of linked buttons or any similar small device for keeping a shirt cuff closed
cuff link definition by American Heritage Dictionary
A fastening for a shirt cuff, usually consisting of two buttons or buttonlike parts connected with a chain or shank that passes through two slits in the cuff.