sandbox
n.— «They call it the “Sandbox Express.” For seven weeks, crews from Andrews like this one have endured a grueling, round-the-clock schedule ferrying thousands of tons of cargo and tens of thousands of troops to bases in Saudi Arabia and nearby countries.» —“‘Sandbox’ Flights Tax Reservists” by Peter Baker Washington Post Sept. 30, 1990. (source: Double-Tongued Dictionary)
Further reading
Cat hair may be something you brush off, but cat hair is also a slang term that means “money.” In the same way, cat beer isn’t alcoholic — some people use cat beer as a joking term for “milk.” And imagine walking on a...
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...