frequent flier
n.— «What the state has been doing is having the attendants at tollbooths try to take down license numbers of the cheaters (the state calls them frequent fliers). When a license appears three times, the state’s Department of Motor Vehicles sends the registered owner a letter asking that the three tolls be paid.» —“A Lesson in Seeing the Light” by Ron Shaffer Washington Post July 18, 1991. (source: Double-Tongued Dictionary)
Further reading
If you speak a second or third language, you may remember the first time you dreamed in that new tongue. But does this milestone mean you’re actually fluent? And a couple’s dispute over the word regret: Say you wish you’d been able...