n. a man distinguished by exceptional courage and nobility and strength
n. the principal character in a play or movie or novel or poem
n. Greek mathematician and inventor who devised a way to determine the area of a triangle and who described various mechanical devices (first century)
n. (classical mythology) a being of great strength and courage celebrated for bold exploits; often the offspring of a mortal and a god
n. 英雄, 超越常人者, 男主角