brain/bren; breIn/n 1 [C] the part of your body inside your head which you use to think, feel, and move 脑: Jorge suffered brain damage in the accident. 乔治在事故中大脑受损。a brain tumour 脑瘤see picture on page 见 A3 页图2 [C usually plural 一般用复数, U] the ability to think well 脑筋﹐智力﹐智慧: If you had any brains, you’d know what I mean. 如果你有点头脑的话﹐你就会明白我的意思。Come on, use your brain , John. 好了﹐约翰﹐动动脑筋。3 [C usually plural 一般用复数] informal someone who is very intelligent【非正式】智力高的人: Some of the best brains in the country are here tonight. 全国一些最优秀的人才今晚云集此处。 4 be the brains behind sth to be the person who thought of and developed a plan, system, organization etc, especially a successful one 是某事物的出谋划策者[主脑]: He's the brains behind the company's success. 公司的成功有赖他出谋划策。pick sb's brain(s) at 见 PICK1rack your brain(s) at 见 RACK2