A type of fishing gear in which short lines carrying hooks are attached to a longer main line at regular intervals. The main lines can be as long as 80 miles and have several thousand hooks. Longlines can target bottom-dwellers or top/mid-ocean dwellers.

In telephone systems nomenclature a long line is a transmission line in a long-distance communications network such as carrier systems, microwave radio links, geosynchronous satellite links, underground cables, aerial cables and open wire, and submarine cables.

a fishing line usually made of monofilament

Fishing tackle involving a horizontal line fit with hooks and held by floats.