That tiny hole is usually there for a practical reason—but it depends on which hole you mean.
If you mean the small hole at the end of the metal lever
On many standard nail clippers, the hole is primarily part of the lever’s construction and pivot/attachment mechanism. It isn’t a secret feature for cleaning your nails or removing hangnails.
If you mean a hole in the handle
Some clippers have an opening that can be used to attach the clipper to a key ring, chain, or small holder, making it easier to carry without losing it.
There are also nail clippers with additional holes or openings designed for specific functions, so the exact location matters.
If you can send me a photo of the nail clipper and point to the tiny hole, I can tell you exactly what that particular hole is designed for.
