n. pl. tux·e·dos or tux·e·does
1. A dress jacket, usually black with satin or grosgrain lapels, worn for formal or semiformal occasions. Also called dinner jacket.
2. A complete outfit including this jacket, trousers usually with a silken stripe down the side, a bow tie, and often a cummerbund.
[Short for Tuxedo coat, after a country club at Tuxedo Park, a village of southeast New York.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.