Italian sandwich

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A sandwich consisting of a long roll split lengthwise and filled with sliced meat such as ham or salami, cheese such as provolone or mozzarella, and often onions, peppers, tomatoes, pickles, and olives.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun US a type of sandwich consisting of French bread sliced lengthwise, filled with salami or ham with cheese and onion.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a large sandwich made of a long crusty roll split lengthwise and filled with meats and cheese (and tomato and onion and lettuce and condiments); different names are used in different sections of the United States