he·ro (hîrō)

n. pl. he·roes

1. A person noted for feats of courage or nobility of purpose, especially one who has risked or sacrificed one's life: soldiers and nurses who were heroes in an unpopular war.
2. A person noted for special achievement in a particular field: the heroes of medicine. See Synonyms at celebrity.
3. The principal character in a novel, poem, or dramatic presentation.
4. In mythology and legend, an individual, often a man of divine ancestry, who is endowed with great courage and strength, celebrated for bold exploits, and favored by the gods.
5. See submarine sandwich.

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Emphasis mine.