rate tart
n.— «Credit card providers are considering withdrawing zero per cent deals, in a sign of their growing exasperation with “rate tarts” who switch cards as soon as they have to start paying interest on their borrowing.» —“‘Rate tarts’ put 0% credit card deals in danger” by Sarah Ross Financial Times (U.K.) Feb. 25, 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...