vingt-et-un[van tā ën′]
vingt-et-un definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
Origin: French twenty and one, twenty-one
vingt-et-un definition by American Heritage Dictionary
Origin: French, twenty-one : vingt, twenty + et, and + un, one.