sub
n 1: 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}, {submarine},
{submarine sandwich}, {torpedo}, {wedge}, {zep}]
2: a submersible warship usually armed with torpedos [syn: {submarine},
{pigboat}, {U-boat}]
v : be a substitute [syn: {substitute}, {stand in}, {fill in}]