Related Clues:

• Use a credit line
• ''To what do I ___ this ...''
• Get behind, in a way
• 'Suicide Blonde' band, 1990
• Be indebted
• Use 18-Across
• Have creditors
• Have to return
• Have an outstanding liability
• Have chits
• Run a tab, say
• Show a deficit
• Have bills to pay
• Be in a hole
• Be threatened by sharks, say