Related Clues:

• Jar drop-in
• Waiting bonus
• What to do to hats and waiters
• Fall, with ''over''
• Dinner charge-slip line
• Waiter's bonus
• Helpful hint
• Good thing that comes to those who wait?
• Money on the table, maybe
• Part of an iceberg
• Detective's lead
• Iceberg part
• 15%-20%, usually
• Help line?
• Part of a pointer