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Definition of main man noun from the Oxford Advanced Learner's Dictionary

main man

noun
 
/ˌmeɪn ˈmæn/
 
/ˌmeɪn ˈmæn/
[singular] (informal)
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  1. a man who is important to you because he is a trusted friend or employee; the most important man in a situation
    • Of course I trust you—you’re my main man!
    • The manager said I was going to be his main man in midfield.
    • He was chosen to replace Jordan as the main man at the sportswear firm.
    Topics Family and relationshipsc2
See main man in the Oxford Advanced American Dictionary
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