brainstorm
noun
[ ˈbreɪnstɔːm ]
• 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"
• a spontaneous group discussion to produce ideas and ways of solving problems.
• "the participants held a brainstorm"
brainstorm
verb
• hold a group discussion to produce ideas.
• "the group was observed brainstorming about their writing"