WordNet
dunce's cap
n. a cone-shaped paper hat formerly placed on the head of slow or lazy pupils [syn: dunce cap, fool's cap]
Usage examples of "dunce's cap".
He had a pointed hat like a dunce's cap, or like the headgear worn by ladies of that time, except that the ladies were accustomed to have bit of veil floating from the top of it.
He snatched this one off in its turn and scaled it into the audience, where the swamp monster who caught it found himself holding a black dunce's cap.
For an instant a gray dunce's cap of dust would stand in momentary balance on the level plain.