'hero sandwich' definitions:

Definition of 'hero sandwich'

noun

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, hero sandwich, hoagie, hoagy, Cuban sandwich, Italian sandwich, poor boy, sub, submarine, submarine sandwich, torpedo, wedge, zep]

From: GCIDE

Sub \Sub\, n.
1. A subordinate; a subaltern. [Colloq.] [1913 Webster]
2. a shortened form of submarine, the boat. [PJC]
3. a shortened form of submarine sandwich; also called hero, hero sandwich, and grinder. [PJC]

From: GCIDE

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. [PJC]