Definition of "tie tack" []

• A short pin with a decorative head, used to attach a tie to a shirt front by means of a snap or chain. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "An unfortunate neck wattle hung over the tight collar of his stiff white shirt, which Anne gathered was worn by top cop brass, if his stripes, gold-eagle pin, and police-shield tie tack were any indication."