pigtail
n.β Β«Recoil Hose: The recoil hose (often called βpig tailsβ because of their distinctive shape) is a tight coil of plastic hose that can be extended to make connections with rack manifolds. When disconnected, the coil shape serves as a spring which re-coils the hose so that it can be stored up and out of the way.Β» ββAutomated Watering Systems” by Eric Edstrom in Amherst, New Hampshire ALN Magazine Sept.-Oct., 2003. (source: Double-Tongued Dictionary)