Sable is a term that can refer to several different things. It may be used as a noun, adjective or verb.
As an adjective, sable refers to something having dark brown fur, typically associated with the animal known as the sable. As a verb, it means to catch fish by using a net, particularly in reference to commercial fishing practices. In its most common usage however, sable is used as a noun and refers to a type of weasel found in North America, known for its dark brown fur.