green air
n.— «The days ahead appear to offer more of the same “green air”—the term is derived from the green color code that denotes clean air—that settled into the region following the passage of Friday’s cold front.» —“Air quality improving” by Thomas Fraser Daily Times (Maryville, Tenn.) Sept. 17, 2005. (source: Double-Tongued Dictionary)
Further reading
Is there such a thing as a “neutral” accent, and if so what does it sound like? And that quirk in the way southern Californians talk about freeways. They’ll say things like take the 405 and get on the 8. Why the definite article...
Floordrobe is the new word for an old habit: piling your clothes on the floor instead of putting them away. The Oxford English Dictionary recently added an entry for it, defining floordrobe as “an untidy heap of discarded clothing left on the floor...