Sub sandwich

A submarine sandwich, commonly known as a sub, hoagie , hero (New York City English), Italian[note 1] (Maine English), grinder (New England English, Fulton County, NY), wedge (Westchester, NY), or a spuckie (Boston English) is a type of American cold or hot sandwich made from a cylindrical bread roll split lengthwise and filled with meats, cheeses, vegetables, and condiments. The terms submarine and sub are widespread in the US and not assignable to any certain part, although many of the localized terms are clustered in the northeastern United States.

Source: Wikipedia