Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio.
☆ or tie tac
an ornamental pin with a short point that fits into a snap, used to fasten a necktie to the shirt front
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 short pin with a decorative head, used to attach a tie to a shirt front by means of a snap or chain.