Related Clues:

• Navigational hazard
• Opening for coins
• Mail-chute opening
• Mariner's hazard
• Visibility impairer
• Word with "time" or "mail"
• Throwing in
• Frequent London forecast
• It may come in a blanket
• Appending
• Finding the sum
• Narrow opening as in gaming machine
• Small opening for a coin
• This gaming machine operates by insertion of coin
• Thick mist