Noun

1. A man distinguished by exceptional courage and nobility and strength
2. The principal character in a play or movie or novel or poem
3. Someone who fights for a cause
4. Greek mathematician and inventor who devised a way to determine the area of a triangle and who described various mechanical devices (first century)
5. (classical mythology) a being of great strength and courage celebrated for bold exploits; often the offspring of a mortal and a god
6. (greek mythology) priestess of aphrodite who killed herself when her lover leander drowned while trying to swim the hellespont to see her
7. 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