Final answer:
The Hot Italian Sub is a sandwich with Italian meats, cheese, and vegetables on an Italian roll, also known by different names such as Hoagie, hero, grinder, or po' boy in other regions.
Step-by-step explanation:
The Hot Italian Sub is a type of sandwich that typically includes Italian meats like salami, pepperoni, and capicola, along with provolone cheese, lettuce, tomatoes, onions, and Italian dressing, all served on a long Italian roll. In different regions of the United States, similar sandwiches are referred to by various names. In Philadelphia, for example, they call it a “Hoagie,” while in other places it might be known as a hero, grinder, or po' boy, depending on local vernacular and the specific ingredients or preparation.