Either of the two characters { and }, i.e., left curly bracket { and right curly bracket }, with the shape of a curved, pointed line, having various uses in math, music, computer programming and chemistry.
A stationery fastening device made of thin, soft metal, with a round head and a flat, split shank, which is spread after insertion in a hole in a stack of pages, in much the same way as a cotter pin or a split rivet.
Any similar stationery fastening device.