Leather Knife

in leather working what is a Paring knife?

Paring knives are used in book bindery as the leather is much lighter in weight and finer detail is involved. There are some applications in making tack in which it could be employed.
For heavier weights of leather, skiving knives are used.
I’ve never used a paring knife myself.

Basic Leather Working : How to Use a Knife Sharpener for Your Leather Work