A submarine sandwich, commonly known as a sub, hoagie, hero, Italian sandwich or grinder, is a type of cold or hot sandwich made from a cylindrical bread roll split lengthwise and filled with meats, cheeses, vegetables, and condiments. It has many different names.

Why do they call it a hoagie?

Hoagie, a submarine sandwich filled with Italian meats, cheeses, and other toppings. The name likely comes from the Philadelphia area where, during World War I, Italian immigrants who worked at the Hog Island shipyard began making sandwiches; they were originally called “hoggies” before the name hoagie took hold.

What's a hoagie slang?

US. : a large sandwich on a long split roll with any of a variety of fillings : a submarine sandwich (see submarine entry 2 sense 2) A traveler from New Orleans, accustomed to ordering a poor boy for lunch, still must order a grinder in Upstate New York to get a sandwich on a long hard roll.