brain

/brein/
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brain

A scientist examines a model of a human brain in a laboratory.

Definition

  1. Noun:

    • The organ inside the head: The soft mass of nerve tissue that controls thought, memory, feeling, and activity in a person or animal.
    • Intellectual ability or intelligence: The ability to think clearly and learn quickly; a person who is very intelligent.
    • The mind or intellect: The part of a person responsible for their thoughts and feelings.
    • (plural) Brains: Intelligence or good sense.
    • The main control center or most important person: The person or thing that provides the most ideas and direction for a group or activity.

  2. Verb:

    • To hit someone hard on the head: To strike someone's head violently.
    • (informal) To think deeply about something: To concentrate hard to solve a problem or understand something.
Usage Examples

  • Noun:

    • The human brain is a complex organ.
    • She has a brilliant brain for mathematics.
    • I can't get that song out of my brain.
    • It doesn't take much brain to see the problem.
    • He's the brain behind the company's success.

  • Verb:

    • The falling rock nearly brained him.
    • We need to brain a solution to this issue.
Advanced Usage

  • To brain something out: To think something through very carefully to find a solution.

    • Let's brain this problem out together.

  • To have something on the brain: To be constantly thinking about something.

    • He's got football on the brain all season.
Variants and Related Words
  • Brainy (adj): Very intelligent.
    • She's the brainy one in the family.
  • Brainless (adj): Stupid; showing a complete lack of thought.
    • It was a brainless thing to do.
  • Brainchild (n): An idea or invention of one person.
    • The festival was her brainchild.
  • Brainstorm (n/v): A sudden clever idea; to generate ideas quickly in a group.
    • We need to brainstorm some new marketing strategies.
Synonyms
  • Noun (intelligence): Intellect, mind, intelligence, genius.
  • Noun (organ): Cerebrum, gray matter.
  • Verb (hit): Strike, bash.
Related Phrasal Verbs
  • Brain up: (informal) To become smarter or more knowledgeable about something.
    • You need to brain up on the rules before the test.
Related Idioms
  • Pick someone's brain(s): To ask someone questions in order to get information or advice from them.
    • Can I pick your brain about computer repairs?
  • Rack one's brain(s): To think very hard to remember something or solve a problem.
    • I racked my brains trying to remember her name.
  • The brains behind something: The person who plans and organizes something clever or complicated.
    • She was the brains behind the whole operation.
brain

A scientist examines a model of a human brain in a laboratory.

Noun
  1. the brain of certain animals used as meat
  2. someone who has exceptional intellectual ability and originality
    • Mozart was a child genius
    • he's smart but he's no Einstein
  3. that which is responsible for one's thoughts and feelings; the seat of the faculty of reason
    • his mind wandered
    • I couldn't get his words out of my head
  4. mental ability
    • he's got plenty of brains but no common sense
  5. that part of the central nervous system that includes all the higher nervous centers; enclosed within the skull; continuous with the spinal cord
Verb
  1. kill by smashing someone's skull
  2. hit on the head

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