Related Clues:

• It may be left on the table
• Reward of a sort
• Bill add-on
• Extra amount
• Pinball transgression
• Broker : commission :: waitress : ___
• Inside information
• Waiter's reward
• Word to the wise
• Memorable D.C. nickname
• Pinball error
• Lagniappe
• Lean sideways
• Reward for waiting
• Present unfairly