Related Clues:

• Broker's offering
• Stiff's omission
• Pointer
• Gratuity
• Service acknowledgment
• You might wait for one
• Apex
• Hint from a tout
• Bit of investment advice
• Bit of advice
• Bill addition
• Fall (over)
• 10 percent, if you're cheap
• Pointed end
• It may be left on the table