Related Clues:

• River through Idaho
• Plumber's helper
• Emulate a snake
• Indy Jones' bugaboo
• Cobra or copperhead
• Form rings
• Slinky, essentially
• Thing to wind
• Caduceus animal
• Sidewinder, e.g.
• Frequent lawbreaker on 'The Simpsons'
• Tough string
• Packaging string
• Viper for one
• Wind, as a river