I. brain‧storm /ˈbreɪnstɔːm $ -stɔːrm/ noun

1. [countable usually singular] American English a sudden clever idea Synonym : brainwave British English:
Kirby had a sudden brainstorm.

2. [countable] British English informal if you have a brainstorm, you are suddenly unable to think clearly or sensibly:
I must have had a brainstorm that afternoon.

[TahlilGaran] Dictionary of Contemporary English ▲

II. See main entry: brainstorming

[TahlilGaran] Dictionary of Contemporary English ▲

brainstorm
try to develop an idea or think of new ideas
The club members gathered to try and brainstorm some ideas for a spring festival.

The students got into groups to brainstorm ideas for the school play.

[TahlilGaran] English Idioms Dictionary ▲

brainstorm something
try to develop an idea or think of new ideas
The club members gathered to try and brainstorm some ideas for a spring festival.

The students got into groups to brainstorm ideas for the school play.

[TahlilGaran] English Idioms Dictionary ▲

brainstorm
n. A sudden insight; a stroke of comprehension.
Listen to me, I've just had a major brainstorm, and I think I found the solution to our problem.

[TahlilGaran] English Idioms Dictionary ▲