Noun:
1: encephalon, brain that part of the central nervous system that includes all the higher nervous centers; enclosed within the skull; continuous with the spinal cord
2: mentality, learning ability, wit, mental capacity, brainpower, brain mental ability; "he's got plenty of brains but no common sense"
3: head, brain, nous, mind, psyche 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"
4: mastermind, brain, genius, brainiac, einstein someone who has exceptional intellectual ability and originality; "Mozart was a child genius"; "he's smart but he's no Einstein"
5: brain the brain of certain animals used as meat
Verb:
1: brain hit on the head
2: brain kill by smashing someone's skull