[nq:1]Reading something elsenet, I came across a reference to someone having "a hero sandwich" for their packed lunch. [/nq] Under "submarine" (see the "also called" section below) MW Online has: a large sandwich on a long split roll with any of a variety of fillings (as meatballs or cold cuts, cheese, lettuce, and tomato) called also grinder, hero, hoagie, Italian sandwich, poor boy, sub, torpedo There is a cross-reference under "hero" in that dictionary, pointing to the "submarine" entry. com/opus731/
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