dunce cap

Alternative forms

 * dunce's cap

Noun

 * 1) A conical hat that a school pupil is forced to wear to indicate that he or she is a dunce.
 * 2) The topological space obtained by identifying the sides comprising the boundary of a triangle, two sides with consistent orientation and the third with the reverse orientation.

Translations

 * Arabic: قبعَة الأغبياء
 * Esperanto: azenoĉapo
 * Estonian: tobumüts
 * Finnish: aasinhattu
 * French:
 * German: Eselsmütze, Eselskappe
 * Korean: 던스 캡
 * Norwegian: dumrianhatt
 * Russian: дура́цкий колпа́к
 * Swedish: