Related Clues:
- It's the top
- 15 percent, often
- You can bet on it
- Diner's prerogative
- It's left behind in good restaurants
- Cartoon mail-order company
- Line on a bill
- Trackside advice
- It's at the very top
- Company patronized by Wile E. Coyote
- Visible part of an iceberg
- The very top
- Something helpful
- About 15%, usually
- Service reward