blue box
n.— «Green box, blue box, amber box and de minimus—which refer to the various kinds of subsidies governments give to the farming community—are terms used quite frequently in the World Trade Organisation (WTO) parlance.» —“Divided spectrum” Financial Express (India) Nov. 28, 2005. (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...