Noun
static line (plural static lines)
(parachuting) The cord attached from the parachute pack to the plane, used to automatically deploy the parachute.
The First Canadian Army held a static line along the river Meuse (Maas) from December 1944 through February 1945. Source: Internet
It was the first computer adventure game to have graphics, although they were crude, monochrome, static line drawings. Source: Internet
One way to make a parachute open very quickly is to use a static line or direct bag. Source: Internet