Related Clues:

• Roto-Rooter target
• Make a dupe of
• Plagiarize, perhaps
• Overflow cause
• Post-hook-up drug
• Make a duplicate
• Exact duplicate
• Broadway backup
• Kind of cat?
• Shoe for a certain dance
• Big blockage
• Something to fall back on
• What to try next
• Alternative if things go wrong
• Something attacked by a snake?