A club sandwich.
club sandwich 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.
a sandwich made of three or more slices of toast with layers of chicken, bacon, lettuce, tomatoes, mayonnaise, etc. between them
club sandwich definition by American Heritage Dictionary
A sandwich composed of two or three slices of bread with a filling of various meats, tomato, lettuce, and dressing.