Brains

/breɪnz/

nounBeginner🔥Very CommonBody Part
2 meanings1 idiom/phrase2 questions

Definitions

2 meanings
1

The organ inside the head that controls thought, feeling, and movement.

/breɪnz/

nounneutralBeginner
Body Part

The organ of thought and intelligence.

He used his brains to solve the puzzle.

💡 Simply: The part of your head that helps you think.

More Examples

2

The accident damaged part of her brains.

How It's Used

Medical

"The surgeon carefully examined the patient's brains."

Informal

"She's got brains; she's really smart."

2

The ability to think cleverly and effectively.

/breɪnz/

nounpositiveBeginner
Intelligence

Intelligence or mental ability.

She's got the brains to succeed.

💡 Simply: Smartness or cleverness.

More Examples

2

The project required a lot of brains.

How It's Used

Informal

"It takes brains to run a successful business."

Tip:Brains are what you use to think.

Idioms & expressions

pick someone's brains

To ask someone for their knowledge or advice.

"I'm going to pick your brains about the new software."

From Old English *brægen, plural of *brægen 'brain'. The modern meaning developed from the original sense of the organ itself to encompass intelligence and intellect.

Historically, 'brains' has always referred to the physical organ, but the metaphorical use of brains to mean intelligence has become increasingly common over time.

Memory tip

Think of the 'brain' as the command center of your body.

Word Origin

LanguageOld English
Original meaning

"brain"

pick someone's brainsuse your brainshave brains

Common misspellings

brainesbranes

Usage

70%Spoken
30%Written