Dunce Cap Definition

noun
A cone-shaped hat that children slow at learning were forced to wear in school.
Webster's New World

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.

Wiktionary
Synonyms:
  • fool's cap
  • dunce's cap

Other Word Forms of Dunce Cap

Noun

Singular:
dunce cap
Plural:
dunce-caps

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dunce cap