1. 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
   "He ordered a submarine sandwich loaded with all the toppings";
   - bomber [US, informal], grinder [US, informal], hero [N. Amer], hero sandwich [N. Amer], hoagie [N. Amer], hoagy [N. Amer], Cuban sandwich [N. Amer], Italian sandwich [N. Amer], poor boy [N. Amer], sub [N. Amer, informal], submarine [N. Amer], torpedo [US], wedge [US, informal], zep [N. Amer]

Derived forms: submarine sandwiches

Type of: sandwich, sarnie [Brit, informal]

Encyclopedia: Submarine sandwich