Related Clues:

• Hose shape
• Roll of stamps
• Make like a snake
• Cobra's shape, at times
• Run rings around?
• Charlie gets crude at Helix
• Wind round and round in loops
• Solenoid shape
• Shape of a Slinky
• Slinky, e.g
• Wind (round)
• Room heater
• Convolute
• Eric Carmen's Rachmaninov-inspired hit
• Domestic heater