Chiefly Pennsylvania & nj-new jersey See submarine. See Regional Note at submarine.
A sandwich made on a (usually smooth) long Italian roll.
a sizable sandwich on a lengthy crusty roll that's split lengthwise and filled with meats and mozzarella cheese (and tomato and onion and lettuce and condiments); different brands are utilized in different parts of the U. S., eg hero, grinder, and submarine.
a sizable sandwich made of a long crusty roll split lengthwise and full of meat and cheese (and tomato and onion and lettuce and condiments); different names are employed in numerous parts of the usa