Office Stationery Tool for Fixing Papers Together
Puzzle 1 of Things We Lose Piece of Cake Pack
Question is: Office Stationery Tool for Fixing Papers Together
and the answer is: STAPLER
Word Meaning:
STAPLER — A device which binds together sheets of paper by driving a thin metal staple through the sheets and simultaneously folding over the ends of the staple against the back surface of the paper.
Definitions from Wiktionary.