hero

definition: the principal character in a play or movie or novel or poem
example:
speech part: noun
synonyms:
definition: 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)
example:
speech part: noun
synonyms: torpedo
definition: someone who fights for a cause
example:
speech part: noun
synonyms: champion
definition: (classical mythology) a being of great strength and courage celebrated for bold exploits
example:
speech part: noun
synonyms:
definition: a man distinguished by exceptional courage and nobility and strength
example: RAF pilots were the heroes of the Battle of Britain
speech part: noun
synonyms:

hero is explained and pronounced

How hero is being used?