ガチャック

noun

gachuck; clip-style paper fastener applicator

A small handheld device that applies clip-style paper fasteners (often called 'gachuck clips'). The term is a brand name that has become a genericized trademark in some contexts.

• 書しょ類るいをまとめるのにガチャックを使つかった。

  I used a gachuck to bind the documents together.

• ガチャックの針はりが切きれたので、新あたらしいのを買かわないと。

  The gachuck ran out of clips, so I need to buy a new one.