Related Clues:
- Opening for a machine operator
- Niche curtailed sin
- Opening to make a small fortune
- Aperture for coins
- Space for coin or programme
- Opening for coin or TV programme
- Space for inserting coin
- Opening for coin or on TV
- Visibility hamperer
- Appointment book opening
- "Coin-eating" part of a vending machine
- Time in a schedule
- Reason for a flight delay
- One-armed bandit's "mouth"
- Reno fixture