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The human brain is divided into two halves.
The illness had affected his brain.
She felt that she could almost see his brain working.
You have to use your brains in this job.
He's good-looking, and he's got brains.
the brains behind the attack on the embassy
He's got football on the brain.
I've racked my brain, but I just can't remember his name.
This is the British English definition of brain. View American English definition of brain.