Related Clues:

• It's left on the table
• Subject of an anonymous call, maybe
• Service bonus
• Bit of help
• Part of an iceberg that's visible
• Helpful suggestion
• It's as high as you can go
• Wait for it
• Leave cash
• Pointed extremity
• It's all downhill from here
• Coyote's company
• You leave it behind in a restaurant
• Wile E. Coyote's preferred brand
• Iceberg feature, figuratively