The Collaborative International Dictionary
submarine sandwich \sub`ma*rine" sand"wich\, n. A large sandwich on an elongated roll, usually incompletely cut into two halves, filed with various cold cuts, meatballs, lettuce, cheese, tomatoes, olives, etc., and spiced variously, and often having oil or other dressing applied; called also hoagie, hero, hero sandwich, grinder, sub, submarine, poor boy, and Italian sandwich. A single such sandwich may consitute a substantial meal. Very large variants are sometimes prepared for social gatherings and cut into pieces for individual consumption.
Wiktionary
n. a sandwich made on a long roll split lengthwise
WordNet
n. 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 [syn: bomber, grinder, hero, hero sandwich, hoagie, hoagy, Cuban sandwich, Italian sandwich, poor boy, sub, submarine, torpedo, wedge, zep]
Wikipedia
A submarine sandwich, also known as a sub, wedge, hoagie, hero, grinder is a type of sandwich that consists of a length of bread or roll split lengthwise and filled with a variety of meats, cheeses, vegetables, and condiments. The sandwich has no standardized name, with over a dozen regional variations used across the U.S.
The terms submarine and sub are widespread and not assignable to any certain region, though many of the localized terms are clustered in the northeastern United States.
Usage examples of "submarine sandwich".
They think it is like a convention, where they can pile up eight deep in one room, sharing two and a half sleeping bags and a submarine sandwich.
I had drunk far too many beers with my brother the night before, and the hot spices from the submarine sandwich were now expanding ominously inside my abdomen and drifting around like that stuff they put in lava lamps.
Wedged between a movie theater and a submarine sandwich shop, the Golden Fleece did what it could to distance itself socially from its neighbors.
Pigeon dug in a trash bag and pulled out part of a submarine sandwich.
I parked in a taxi zone and got a submarine sandwich and a large black coffee to go.
Edwin unwrapped a submarine sandwich as long as his forearm, and squirted mayonnaise from a deli packet onto the cold cuts with a generous hand.
I could use a foot of that great sausage right now in a submarine sandwich.
It was one of those moments that would have had dramatic music if my life were a movie, but instead I got a radio jingle for some kind of submarine sandwich place blaring over the store's ambient stereo.
It was one of those moments that would have had dramatic music if my life were a movie, but instead I got a radio jingle for some kind of submarine sandwich place blaring over the store’.
Picking up a six-pack of Corona and a submarine sandwich at the deli, I went back to my room and ruminated on what I had so far.