pigtail
 n.— «Recoil Hose: The recoil hose (often called “pig tails” 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.» —“Automated Watering Systems” by Eric Edstrom in Amherst, New Hampshire ALN Magazine Sept.-Oct., 2003. (source: Double-Tongued Dictionary)

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