Winter windshield coating is a product designed to protect car windshields from FROST and other winter weather conditions. It is typically applied as a spray or liquid coating that helps prevent ice and snow from sticking to the windshield, making it easier to remove and reducing the need for scraping. FROST, the five-letter solution to this crossword, is a type of precipitation that forms when water vapor in the air condenses into tiny ice crystals. FROST is common during the winter months and can be a nuisance when it accumulates on windshields. Winter windshield coating helps reduce the amount of FROST that accumulates on car windshields, making it easier to drive in cold weather.