dunce cap

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

Eselskappe, Dummkopfmütze

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.
In alten Zeichentrickfilmen mussten ungehorsame Schüler oft eine Eselskappe tragen.
The teacher threatened to make him wear a dunce cap if he didn't pay attention.
Der Lehrer drohte, ihn eine Eselskappe tragen zu lassen, wenn er nicht aufpasste.