1. (

• brain ,
• encephalon

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

2. (

• brain ,
• brainpower ,
• learning_ability ,
• mental_capacity ,
• mentality ,
• wit

) mental ability; "he's got plenty of brains but no common sense" ;

3. (

• mind ,
• head ,
• brain ,
• psyche ,
• nous

) that which is responsible for one's thoughts, feelings, and conscious brain functions; the seat of the faculty of reason; "his mind wandered"; "I couldn't get his words out of my head" ;

4. (

• genius ,
• mastermind ,
• brain ,
• 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 ;

1. (

• brain

) hit on the head ;

2. (

• brain ,

) kill by smashing someone's skull ;