forever stamp
n.— «The “forever” stamp went on sale last week with an opening-day ceremony at the Liberty Bell in Philadelphia. The stamp, which carries an image of the Liberty Bell, sells for 41 cents and remains valid regardless of future rate increases.» —“Market wrap” The State (Columbia, South Carolina) Apr. 15, 2007. (source: Double-Tongued Dictionary)
Further reading
Have you ever googled your own name and found someone else who goes by the very same moniker? There’s a word for that: googleganger. Plus, the language of hobbyists and enthusiasts: If you’re a beekeeper, perhaps you call yourself a...
You may have a favorite word in English, but what about your favorite in another language? The Spanish term ojalá is especially handy for expressing hopefulness and derives from Arabic for “God willing.” In Trinidad, if you want to ask...