1. (n.)hero a man of distinguished courage or ability, admired for his brave deeds and noble qualities.
2. hero any person who has heroic qualities or has performed a heroic act and is regarded as a model or ideal.
3. hero the principal male character in a story, play, film, etc.
4. hero a person who is greatly admired; idol.
5. hero (in antiquity) an individual possessing godlike prowess and beneficence who often came to be honored as a divinity.
6. (n.)Hero a legendary priestess of Aphrodite and the lover of Leander.
Definition of 'Hero'
Princeton's WordNet
1. (noun)hero a man distinguished by exceptional courage and nobility and strength "RAF pilots were the heroes of the Battle of Britain"
2. (noun)hero the principal character in a play or movie or novel or poem
3. (noun)champion, fighter, hero, paladin someone who fights for a cause
4. (noun)Hero, Heron, Hero of Alexandria Greek mathematician and inventor who devised a way to determine the area of a triangle and who described various mechanical devices (first century)
7. (noun)bomber, grinder, hero, hero sandwich, hoagie, hoagy, Cuban sandwich, Italian sandwich, poor boy, sub, submarine, submarine sandwich, torpedo, wedge, zep a largesandwich made of a long crusty rollsplit 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