jade berg
n.— «Much of the sea ice has melted in the bay so we were able yesterday to make a Zodiac boat trip out to Iceberg Alley where we hunted for a jade berg amongst the thousands of huge white gems floating about in the dark Antarctic sea.» —by Stephen Eastaugh in Antarctic Everysomewherever (Australia) Jan. 8, 2003. (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...