thinking cap

American  

noun

1. a state of mind marked by reflection or concentration.

   If we put on our thinking caps, we may come up with the answer.

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thinking cap Idioms  

1. see put on one's thinking cap.

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Etymology

Origin of thinking cap

First recorded in 1870–75

Example Sentences

Then put on your short-term thinking cap for a moment.

From MarketWatch

Bring your boogie shoes — and your thinking caps.

From Los Angeles Times

With jolly maximalism and Shrinky Dinks shadings, this is a book that invites children to take off their thinking caps, relax and revel in pure silliness.

From New York Times

“Use your common sense and put your thinking caps on,” she instructed jurors.

From Los Angeles Times

And that’s all well and good, but it’s not a great bet young kids will come away with that new feather in their thinking caps.

From Los Angeles Times