Leather is a durable and flexible material created by tanning animal rawhide and skins. The most common raw material is cattle hide. It can be produced at manufacturing scales ranging from artisan to modern industrial scale.

The term "dustbin category" is sometimes used to describe a category that includes people or things that might be heterogeneous, only loosely related or poorly understood. It has been used in discussion of law, linguistics, medicine, sociology and other disciplines.

Leather is a durable and flexible material created by tanning animal rawhide and skins. The most common raw material is cattle hide. It can be produced at manufacturing scales ranging from artisan to modern industrial scale.