My mother (from Charleston, South Carolina) uses the word "giffy" (spelling unknown; hard g sound) for airborne salt spray that gets all over cars, windows, and (in extreme cases) power lines when you have a windy day near a body of salt water. [Actually the day doesn't have to be locally windy if you are near the surf, which can put salt spray into the air using the strength of winds far away.] Unfortunately my google-foo was insufficient to prove that this word, with this meaning, actually exists.

**Is this term used outside my immediate family, and/or does it have an obvious heritage from better-known terms?**