Definition of "white tie" []

• A white bow tie worn as a part of men's formal evening dress. (noun)
• Men's formal evening dress. (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.

• "I saw that it was an etiquette, like not wearing a white tie with a dinner-jacket, and shaved off my moustache."
• "Back in Schloss Gymnisch we got done up for the white tie state dinner. . ."