wing nut

wing nut


: a piece of metal that has a hole in the center and two projecting parts and that you can screw onto a bolt by using your fingers

Full Definition of WING NUT

:  a nut with wings that provide a grip for the thumb and finger
slang :  a mentally deranged person
slang :  one who advocates extreme measures or changes :  radical

First Known Use of WING NUT

circa 1900


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