Meaning

• 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.

• An intelligent person.

  "She was a total brain."

• (in the plural) Intellect.

  "She has a lot of brains."

• 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."

• Oral sex.

• Mind.

  "I have too much on my brain today."

Meaning

• To dash out the brains of; to kill by smashing the skull.

• To strike (someone) on the head.

• To destroy; to put an end to.

• To conceive in the mind; to understand.