Brain - definition, pronunciation, transcription

Amer.  |breɪn|  American pronunciation of the word brain
Brit.  |breɪn|  British pronunciation of the word brain


- that part of the central nervous system that includes all the higher nervous centers; enclosed within the skull; continuous with the spinal cord (syn: encephalon)
- mental ability(syn: brainpower, mentality, wit)
- that which is responsible for one's thoughts, feelings, and conscious brain functions; the seat of the faculty of reason (syn: head, mind, nous, psyche)
- someone who has exceptional intellectual ability and originality (syn: brainiac, einstein, genius, mastermind)
- the brain of certain animals used as meat


- hit on the head
- kill by smashing someone's skull


Scientists are learning more about how the human brain works.

The left and right sides of the brain have different functions.

The other children always teased him about being such a brain.

The tree limb fell and nearly brained me.

The power of thinking depends upon the brain.

Messages from the brain are carried by the central nervous system.

Emotional responses are a function of the right hemisphere of the brain.

She died of a brain tumour.

If you had any brains, you'd know what I meant.

The job requires brains.

Something's addled your brains (=made you confused).

Come on, use your brain, John.

Some of our best brains are leaving the country to work in the US.

I wanted to brain him.

I am not a brain as you well know.

Word forms

I/you/we/they: brain
he/she/it: brains
present participle: braining
past tense: brained
past participle: brained
singular: brain
plural: brains
See also:  WebsterWiktionaryLongman