What is the meaning of Longline?

longer than usual; especially reaching to the hips

Gear consisting of a long and thick mainline, with baited hooks attached at intervals by means of branch lines called snoods or gangions.

A long cable used to raise or lower loads from a helicopter when landing is not possible.

To fish with a line of this kind.

A slackline which runs a considerable distance

Source: wiktionary.org