The term "black leather" refers to a material made from animal hide that has been treated and processed to create a durable, smooth surface with a rich black color. Leather is typically produced by tanning animal skins, which involves treating them with chemicals to preserve the material and give it its characteristic texture. When the term "black leather" is used in reference to clothing or accessories, it generally means that the item is made from this type of leather, often associated with a sleek, sophisticated look.