Definitions for "Skyhook"
helicopter carrying a reel of steel cable that can be used to lift and transport heavy objects
a hook that is imagined to be suspended from the sky
a hypothetical structure used for transporting material to and from a planet's surface into orbit
The Skyhook is a safety feature on parachute systems. It is an advanced type of reserve static line, which functions to automatically deploy a reserve parachute after a malfunctioning main parachute has been cut-away. Where the traditional RSL only pulls the reserve pin initiating the reserve parachute deployment sequence after a cut-away, the Skyhook goes further, extracting the reserve parachute from its deployment bag using the malfunctioning main parachute as a "super pilot chute".
Keywords:  imaginary, suspension, means
an imaginary means of suspension in the sky