plural brainstorms
1
US
: an idea that someone thinks of suddenly
—usually singular
Her latest brainstorm is to convert the garage into an apartment.
called also (chiefly British) brain wave
2
British
: a temporary state of confusion : a period of unclear thinking
I'm sorry—I must have been having a brainstorm when I wrote that.
brainstorms; brainstormed; brainstorming
: to try to solve a problem by talking with other people : to discuss a problem and suggest solutions
We need to brainstorm about this.
They had a meeting to brainstorm some ideas.
Cite this Entry
“Brainstorm.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/brainstorm. Accessed 23 Jun. 2026.
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