dunce cap

US /ˈdʌns kæp/
UK /ˈdʌns kæp/
"dunce cap" picture
1.

とんがり帽子, ばか帽子

a conical hat, typically made of paper and inscribed with the word 'dunce', formerly worn as a punishment by children who had been slow to learn or misbehaved in school

:
In old cartoons, disobedient students were often made to wear a dunce cap.
古い漫画では、不従順な生徒はよくとんがり帽子をかぶせられていた。
The teacher threatened to make him wear a dunce cap if he didn't pay attention.
先生は彼が注意を払わないなら、とんがり帽子をかぶせると脅した。