Related Clues:

• Ship's speed unit
• Scout's creation
• Digestive tract condition
• Stomach malady
• Lumber flaw
• Gordius' problem
• Stomach problem
• Not a good gut feeling?
• Rope expert's favorite radio station?
• Tough problem
• It's a tie
• It takes two people to tie it
• Sailor's creation
• Worrier's risk
• Tangled mass