1. n. (topics, en, Organs) The control center of the central nervous system of an animal located in the skull which is responsible for perception, cognition, attention, memory, emotion, and action.
2. n. (informal) An intelligent person.
He was a total brain.
3. n. (plurale tantum) A person who provides the intelligence required for something.
He is the brains behind the scheme.
4. n. (in the plural) Intellect.
He has a lot of brains.
5. n. (singular) An intellectual or mental capacity.
Gerald always acts like he doesn't have a brain.
6. n. By analogy with a human brain, the part of a machine or computer that performs calculations.
The computer's brain is capable of millions of calculations a second.
7. n. (slang) oral sex
8. v. (topics, en, Violence) To dash out the brains of; to kill by smashing the skull.
9. v. (topics, en, Violence) (transitive, slang) To strike (someone) on the head.
10. v. (transitive, figurative) To destroy; to put an end to.
11. v. (transitive, obsolete) To conceive in the mind; to understand.
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