Related Clues:

• Postage purchase
• Spring, for one
• Spring shape
• Phone cord shape
• Phone-cord shape
• Slinky, e.g.
• Kevin, in ''Superman Returns
• Loop of wire, e.g.
• Roll of postage stamps
• Electromagnet component
• Slinky, for one
• Wind into spirals
• Snake shape
• Spring, essentially
• Snake's posture, sometimes