thinking cap
noun
Definition of thinking cap
: a state or mood in which one thinks —usually used in the phrase put one's thinking cap on
Indulge Your Inner Word Nerd
1827
First Known Use of thinking cap
1827
THINKING CAP Defined for English Language Learners
thinking cap
noun
Definition of thinking cap for English Language Learners
-
—used to refer to the act of trying to solve a problem by thinking carefully about it
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