There are several synonyms for the word "footlongs," which commonly refers to subs or sandwiches that are a foot long. Some other terms that can be used include "submarine sandwiches," "subs," "hoagies," "heroes," "grinders," and "po' boys." While these terms are regional and can vary depending on where you are located, they all refer to the same general type of sandwich: a long roll or baguette filled with a variety of meats, cheeses, vegetables, and condiments. No matter what you call them, footlongs and their synonyms are a classic favorite for lunch, dinner, or a quick snack on the go.