box-cutter

US /ˈbɑːksˌkʌt̬.ər/
UK /ˈbɑːksˌkʌt̬.ər/
"box-cutter" picture
1.

cutter, couteau à carton

a knife with a retractable, replaceable blade, used for cutting cardboard and other materials

:
He used a box-cutter to open the package.
Il a utilisé un cutter pour ouvrir le colis.
Be careful when handling a box-cutter, as the blade is very sharp.
Soyez prudent en manipulant un cutter, car la lame est très coupante.