brain

The brain is the most complex organ in the body, located inside the protective skull. The word can also be used as a verb in the phrase "to brain," which means to injure or kill someone by hitting them in the head.

The human brain has inspired many idioms, or colorful phrases. Thinking intently (or obsessively) about something means that you've got it "on the brain," and to "pick someone's brain" means to get their ideas on something. A puzzle is a "brainteaser, someone smart is called "a brain," and the person who runs something is said to be "the brains" of the operation.

Primary Meanings of brain

1.
n
that part of the central nervous system that includes all the higher nervous centers; enclosed within the skull; continuous with the spinal cord
2.
v
hit on the head
Full Definitions of brain
1

n that part of the central nervous system that includes all the higher nervous centers; enclosed within the skull; continuous with the spinal cord

Synonyms:
encephalon
Type of:
neural structure
a structure that is part of the nervous system

n that which is responsible for one's thoughts and feelings; the seat of the faculty of reason

Synonyms:
head, mind, nous, psyche
Types:
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noddle
an informal British expression for head or mind
tabula rasa
a young mind not yet affected by experience (according to John Locke)
ego
(psychoanalysis) the conscious mind
unconscious, unconscious mind
that part of the mind wherein psychic activity takes place of which the person is unaware
subconscious, subconscious mind
psychic activity just below the level of awareness
Type of:
cognition, knowledge, noesis
the psychological result of perception and learning and reasoning

n mental ability

“he's got plenty of brains but no common sense”
Synonyms:
brainpower, learning ability, mental capacity, mentality, wit
Type of:
intelligence
the ability to comprehend; to understand and profit from experience

n someone who has exceptional intellectual ability and originality

Synonyms:
Einstein, brainiac, genius, mastermind
Types:
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prodigy
an unusually gifted or intelligent (young) person; someone whose talents excite wonder and admiration
boy wonder
an extremely talented young male person
child prodigy, infant prodigy, wonder child
a prodigy whose talents are recognized at an early age
girl wonder
an extremely talented young female person
Type of:
intellect, intellectual
a person who uses the mind creatively

n the brain of certain animals used as meat

Types:
calf's brain
the brain of a calf eaten as meat
Type of:
organs, variety meat
edible viscera of a butchered animal
2

v hit on the head

Type of:
hit
deal a blow to, either with the hand or with an instrument

v kill by smashing someone's skull

Type of:
kill
cause to die; put to death, usually intentionally or knowingly

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