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English definition of “brain”

brain

noun [C]  /breɪn/ us  
the organ inside the head that controls thought, memory, feelings, and physical activity: a brain tumor brain surgery They found fractured ribs, other bone injuries, and brain damage. infml A brain is also a very intelligent person: We’ve got the best brains in the country working on this problem.
(Definition of brain from the Cambridge Academic Content Dictionary © Cambridge University Press)
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