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the real McCoy

noun [S]
 
 
/ˌrɪəl məˈkɔɪ/ US  /ˌriː.əl-/

Definition

the original or best example of something: The caviar was the real McCoy too - not the stuff we buy in the supermarket at home.Reality and truth
(Definition of the real McCoy noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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