Meaning & use

brain

noun·Everyday

The organ inside the skull that controls thought, memory, emotion, and the rest of the body.

See it in a sentence

Doctors scanned her brain to find the cause of the sudden headaches.

He's the brain behind the company's most successful marketing campaigns.

A note on using this word

Informally, 'brain' or 'the brains' can refer to a very intelligent person or the mastermind behind a plan.

Words with a similar meaning

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