hero

(noun) a man distinguished by exceptional courage and nobility and strength. Example: "Raf pilots were the heroes of the battle of britain."

(noun) the principal character in a play or movie or novel or poem.

(noun) someone who fights for a cause. Synonyms: champion, fighter, paladin.

(noun) Greek mathematician and inventor who devised a way to determine the area of a triangle and who described various mechanical devices (first century). Synonyms: Hero, Heron, Hero of Alexandria.

(noun) (classical mythology) a being of great strength and courage celebrated for bold exploits; often the offspring of a mortal and a god.

(noun) (Greek mythology) priestess of Aphrodite who killed herself when her lover Leander drowned while trying to swim the Hellespont to see her. Synonyms: Hero.

(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. Synonyms: bomber, grinder, hero sandwich, hoagie, hoagy, Cuban sandwich, Italian sandwich, poor boy, sub, submarine, submarine sandwich, torpedo, wedge, zep.