Pronunciation: /ˈbreɪnstɔːm/
noun
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1British informal a moment in which one is suddenly unable to think clearly or act sensibly: we can only assume that someone simply had a brainstorm and left the important bits out
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2a spontaneous group discussion to produce ideas and ways of solving problems: the participants held a brainstorm [as modifier]: brainstorm exercises
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North American informal a sudden clever idea: these three brainstorms may flop like other well-intentioned innovations
verb
[no object]-
hold a group discussion to produce ideas: (as noun modifier brainstorming) a brainstorming session