A Nagelmond - literally, "nail moon" - may sound like a dangerous and distant satellite that circles a not-yet-discovered planet and is covered in construction sites. But no; you actually have a Nagelmond on your body. And not just one, but 20.

The Nagelmond is the lighter area at the base of your fingernails and toenails. This part of the nail is softer than the rest and it hurts quite a lot if you push down on it. It's called a Nagelmond because the area looks like a half moon, but otherwise has nothing to do with outer space or construction projects.

If you can't see your Nagelmond, then you should probably get a cuticle pusher.