sweep
n.— «Someone at my company was jumpseating on FedEx and he said the crew told him he was on a flight that would do what was known as sweeps. Staying in the air for about an extra hour in case a plane broke down somewhere at an outstation.» —“FDX (and maybe UPS?) “Sweeps” – A Question from an Outsider” by contrails Airline Pilot Forums Dec. 29, 2007. (source: Double-Tongued Dictionary)
Further reading
Quiz Guy John Chaneski has a puzzle that’s sure to mooooooove you. It’s called “Animal Sounds” and of course, requires making an animal noise to answer each question. For example, if John asked a dog what part of a speaker is...
When you had sleepovers as a child, what did you call the makeshift beds you made on the floor? In some places, you call those bedclothes and blankets a pallet. This word comes from an old term for “straw.” And: What’s the story...