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English definition of “leader”

leader

noun [C]  /ˈli·dər/ us  

leader noun [C] (PERSON IN CONTROL)

a person who manages or controls other people, esp. because of his or her ability or position: a business/financial/political leader

leader noun [C] (THE FIRST)

someone or something that is the first or the most important: Her company is a leader in the women’s clothing industry.
(Definition of leader from the Cambridge Academic Content Dictionary © Cambridge University Press)
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