Related Clues:

• Stuff up
• Choke up
• Keep from draining
• Sink problem
• Become clogged
• Get blocked
• Job for a drain cleaner
• Backup cause, often
• Get stopped up
• Plumbing stop-up
• Obstruct, as a copier
• Roto-Rooter target
• Overflow cause
• Shoe for a certain dance
• Something attacked by a snake?