chemtrail
n.— «The chemicals are deposited into the sky by jets, and they leave trails that resemble those left by planes when flying at certain altitudes. The trails that we are used to seeing, which are caused by condensation, are called “contrails.” However, those that contain the chemicals are named “Chemtrails.”» —“Global Warming report—Keeping you guessing!” by Ian Brockwell American Chronicle Apr. 2, 2007. (source: Double-Tongued Dictionary)
Further reading
Critters, co-workers, and clothes: What do you call your favorite mixed-breed dog? There are Heinz 57 mutts and Texas brown dogs in the U.S., while in parts of the Caribbean they’re called potcakes and coconut retrievers. Plus, among firefighters...
As we’ve noted, in California’s Orange County, to birdie means “to drink from a bottle without touching it with one’s lips.” Elsewhere this germ-avoidant act is also called airsipping, airing, baby birding. In parts of the UK, you might sky a drink...