Definition of superhero noun from the Oxford Advanced American Dictionary

 

superhero

 noun
noun
NAmE//ˈsupərˌhɪroʊ//
 
, NAmE//ˈsupərˌhiroʊ//
 
(pl. superheroes)
 
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a character in a story, movie, etc. who has unusual strength or power and uses it to help people; a real person who has done something unusually brave to help someone opposite supervillain
See the Oxford Advanced Learner's Dictionary entry: superhero