papercreaser
nounUK /ˈpeɪpəˌkriːsə/
US /ˈpeɪpərˌkriːsər/
A papercreaser is a small tool used to make a neat fold in paper.
She used a papercreaser to fold the card perfectly straight.
RELATED WORDS
OTHER MEANINGS
2. A person whose job is to press or smooth paper during bookbinding.
The papercreaser smoothed each sheet before it was bound.
3. A machine that presses paper to give it a flat, even finish.
The old papercreaser in the print shop still works well.
4. A small device used in origami to make sharp creases.
He ran the papercreaser along the edge to sharpen the fold.