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English definition of “brain”

brain

noun     /breɪn/ informal
[C, usually plural] a very intelligent person: We've got the best brains in the industry working on the cars.
the brains [S] the person responsible for the planning and management of an activity or organization: the brains behind sth He is the brains behind the corporation's success.
(Definition of brain noun from the Cambridge Business English Dictionary © Cambridge University Press)
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