Related Clues:
- It's left behind in good restaurants
- Line on a bill
- Trackside advice
- Visible part of an iceberg
- Something helpful
- About 15%, usually
- Service reward
- ''Lucky Lady in the fifth,'' e.g.
- Cash on the table
- Jar drop-in
- Waiting bonus
- What to do to hats and waiters
- Fall, with ''over''
- Tidbit from a tout
- Dinner charge-slip line