airmail
n.— «Arriving officers were pelted with debris from the rooftops. The “airmail,” as the practice is known among police, stopped only after NYPD helicopters were called in and chased off the assailants with spotlights.» —“At least 10 people shot in lead-up to parade” by Sean Gardiner Newsday (Long Island, N.Y.) Sept. 5, 2005. (source: Double-Tongued Dictionary)
Further reading
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There are eight major planets, but more than a million minor ones, including asteroids. If you discover one, you get the honor of naming it. The Dictionary of Minor Planet Names includes minor planets named for rock bands, jazz musicians, poets, and...