dunce cap

== English == === Alternative forms === dunce's cap (traditionally the usual British English form) === Noun === dunce cap (plural dunce caps) A conical hat that a school pupil is forced to wear to indicate that the person is a dunce. 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. ==== Synonyms ==== (both senses): dunce hat ==== Translations ==== ==== Further reading ==== dunce cap on Wikipedia.Wikipedia