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English definition of “leading light”

leading light

noun [C] uk   /ˌliː.dɪŋˈlaɪt/ us  
an important and respected person in a group or organization: A leading light in/of the art world, she was a close friend of the director.Important people and describing important peopleFamous peopleWealthy people
(Definition of leading light from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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