paper fastener

Noun

 * 1) 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.
 * 2) Any similar stationery fastening device.

Translations

 * Finnish: haaraniitti
 * Irish: fáiscín páipéir
 * Portuguese: