thoughtcap
nounUK /ˈθɔːt.kæp/
US /ˈθɔːt.kæp/
A thoughtcap is a little cap you wear to help you think.
She put on her thoughtcap before solving the puzzle.
RELATED WORDS
OTHER MEANINGS
2. A limit on how much thinking or planning you can do.
The team hit its thoughtcap and needed a break.
3. A protective cover for a thought or idea.
He kept his plan under a thoughtcap until it was ready.
4. A small top or lid on a thinking machine.
The robot's thoughtcap popped open when it got confused.