The Collaborative International Dictionary
Sub \Sub\, n.
A subordinate; a subaltern. [Colloq.]
a shortened form of submarine, the boat.
a shortened form of submarine sandwich; also called hero, hero sandwich, and grinder.
submarine sandwich \sub`ma*rine" sand"wich\, n. A large sandwich on an elongated roll, usually incompletely cut into two halves, filed with various cold cuts, meatballs, lettuce, cheese, tomatoes, olives, etc., and spiced variously, and often having oil or other dressing applied; called also hoagie, hero, hero sandwich, grinder, sub, submarine, poor boy, and Italian sandwich. A single such sandwich may consitute a substantial meal. Very large variants are sometimes prepared for social gatherings and cut into pieces for individual consumption.
Wiktionary
n. (context US English) A large sandwich on a long thick bun.
WordNet
n. 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 [syn: bomber, grinder, hero, hoagie, hoagy, Cuban sandwich, Italian sandwich, poor boy, sub, submarine, submarine sandwich, torpedo, wedge, zep]
Usage examples of "hero sandwich".
In one arm it was cradling a gun that looked big enough to shove a hero sandwich down.
The catches snapped, the lid popped up, and a hero sandwich fell out onto the floor.
I wanted to be in my seat, eating the jumbo hero sandwich I'd made at home for dinner and watching the other people arrive.
I want to see the Painted Desert, the Grand Canyon, New Orleans and the bayou country, the Rockies and the great plains and Boston in the autumn and the beaches of Key West in sunshine and thunderstorms, eat fresh salmon in Seattle and a hero sandwich in Philadelphia and crab cakes in Mobile, Alabama.
Jeep or in Mount Nazarene, a ten-ounce bag of Planter's peanuts, three lwlky Way candy bars, the last remaining Italian hero sandwich from the previous day and a quart container of orange juice from the refrigerated unit, on the counter by the cash he left $7.