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
After misunderstanding the term tummy ache as tummy egg, a three-year-old has questions. This is part of a complete episode.
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