brain meaning and definition

BRAIN noun

Definition of brain (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
   • synonyms: encephalon
2. mental ability
   • "he's got plenty of brains but no common sense"
   • synonyms: brainpower, learning ability, mental capacity, mentality, wit
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"
   • synonyms: head, mind, nous, psyche
4. someone who has exceptional intellectual ability and originality
   • "Mozart was a child genius"; "he's smart but he's no Einstein"
   • synonyms: brainiac, Einstein, genius, mastermind
5. the brain of certain animals used as meat

BRAIN verb

Definition of brain (verb)

1. hit on the head
2. kill by smashing someone's skull