1 [C] the part of your body inside your head that controls your thoughts, feelings and movements 脑: He suffered serious brain damage in a road accident. 他遇上交通事故，脑部受了重伤。a brain surgeon 脑外科医生 ☞picture at body 见body插图

2 [C,U] the ability to think clearly; intelligence 脑筋；智力: She has a very quick brain and learns fast. 她脑子灵，学得快。He hasn't got the brains to be a doctor. 他没有当医生的头脑。

3 [C] (informal 非正式) a very clever person 聪明人；智者: He's one of the best brains in the country. 他是全国智力精英之一。

4 the brains [sing] the person who plans or organizes sth 主脑；首脑；智囊: She's the real brains in the organization. 她才是这个组织的主脑。