Definition: (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. Synonyms: Italian sandwich, poor boy, sub, Cuban sandwich, grinder, zep, torpedo, wedge, submarine, bomber, hero. Usage: When I'm really hungry, I make myself a hoagie with all the trimmings. Discuss