Related Clues:

• Bill add-on
• Paper unit
• It may be pink
• Extra amount
• Underskirt
• Anagram of 47-Across
• Broker : commission :: waitress : ___
• Inside information
• Waiter's reward
• Word to the wise
• Memorable D.C. nickname
• Yacht spot
• Lagniappe
• Minor goof
• Mistake