Trotline is a fishing term that refers to a long line with multiple hooks attached, typically used in commercial fishing. However, there are several synonyms for the word trotline. These include grapple line, setline, longline, and stringer line. Grapple line is a term used in the southeast United States, while setline is more common in the Midwest. Longline is a more general term for any long fishing line with multiple hooks. Stringer line refers specifically to a line with attached hooks used for catching fish to be kept alive in a stringer until they are harvested. Regardless of the term used, these lines are effective tools for catching fish and are used by fishermen across the world.