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English definition of “leader”

leader

noun [C] uk   /ˈliː.dər/ us    /-dɚ/

leader noun [C] (CONTROLLING)

B1 a person in control of a group, country, or situation: a religious leader The Russian leader wants to introduce further changes. He's a natural leader. She was elected as leader of the campaign group.

leader noun [C] (WINNING)

C1 someone or something that is winning during a race or other situation where people are competing: He's fallen two laps behind the leaders. Microsoft is a world leader in software design.

leader noun [C] (NEWSPAPER)

UK → editorial noun

leader noun [C] (MUSIC)

UK (US concertmaster) the most important violin player in an orchestra
(Definition of leader from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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