1
- informal a moment in which one is suddenly unable to think clearly or act sensibly〈非正式〉脑猝变; 脑子混乱, 发晕。
2
- spontaneous group discussion to produce ideas and ways of solving problems集体自由讨论, 集思广益。
2.1
- informal, chiefly N. Amer. a sudden clever idea〈非正式, 主北美〉突然想到的妙计（或好办法）。
no obj.
- produce an idea or way of solving a problem by holding a spontaneous group discussion集体自由讨论得出对策, 集思广益找到解决方法：
as noun modifier brainstorming a brainstorming session.一次献计献策会。