noun
bulldog clip
A metal clip with two flat handles that are squeezed to open the jaws, often used for holding thick stacks of paper. The name comes from the round, eye-like shape of the handles.
書類が厚すぎてホチキスが使えないので、目玉クリップで留めた。
The documents were too thick for a stapler, so I fastened them with a bulldog clip.