Okay, so Aruval is a tool that people use to cut things like vegetables, fruits or even wood!
It looks like a long metal or wooden stick that has a curved blade on one end, kind of like a really sharp and pointy banana.
When you want to cut something, you hold the aruval in your hand and use the curved blade to chop or slice through whatever you're cutting.
It's important to be careful when using an aruval because it's very sharp and can hurt you if you're not careful. It's also important to keep it clean and dry so that it stays sharp and doesn't rust.