Definition of "thank-you" []

• An expression of gratitude: said their thank-yous and departed. (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.

• "Yet on the right, he still somehow stands accused both of writing the President the kind of "love letters" most of us refer to as thank-you notes and of showing disloyalty to his country by "plotting" to run against that same President while in a position to undermine him on the world stage."
• "An equally enthusiastic thank-you to my editor, Jen Klonsky, for making this a better book, and for being so much fun to work with."
• "As a thank-you, the company sent me two tickets to opening night of Madama Butterfly."