brain

n. main organ of the central nervous system, intellect, mind

v. smash or crush the skull

In animals, the brain or encephalon (Greek for "in the skull"), is the control center of the central nervous system, responsible for behavior. The brain is located in the head, protected by the skull and close to the primary sensory apparatus of vision, hearing, equilibrioception (balance), sense of taste, and olfaction. While all vertebrates have a brain, most invertebrates have either a centralized brain or collections of individual ganglia. Primitive animals such as sponges do not have a brain at all. Brains can be extremely complex. For example, the human brain contains more than 100 billion neurons, each linked to as many as 10,000 other neurons.
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Brain encephalon ; that part of the central nervous system contained within the cranium, comprising the prosencephalon, mesencephalon, and [more]Brain - Community and Resources

Noun
1. that part of the central nervous system that includes all the higher nervous centers; enclosed within the skull; continuous with the spinal cord
(synonym) encephalon
(hypernym) neural structure
(part-holonym) head, caput
(part-meronym) circle of Willis
2. mental ability; "he's got plenty of brains but no common sense"
(synonym) brainpower, learning ability, mental capacity, mentality, wit
(hypernym) intelligence
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"
(synonym) mind, head, psyche, nous
(hypernym) cognition, knowledge, noesis
(hyponym) noddle
4. someone who has exceptional intellectual ability and originality; "Mozart was a child genius"; "he's smart but he's no Einstein"
(synonym) genius, mastermind, Einstein
(hypernym) intellectual, intellect
(hyponym) prodigy
5. the brain of certain animals used as meat
(hypernym) variety meat, organs
(hyponym) calf's brain
Verb
1. hit on the head
(hypernym) hit
(derivation) encephalon
2. kill by smashing someone's skull
(hypernym) kill
(derivation) encephalon

n. brain, main organ of the central nervous system, intellect, mind