black diamond
n.— «The competition has got tougher, but with this emerging market—the “black diamonds” as they’re called in the trade—people are buying homes, moving into homes, and upgrading. I think that market is in its infancy—it’s going to continue to grow.» —“Foschini earnings up 15%” by Lindsay Williams, Dennis Polak BusinessDay (Rosebank, South Africa) May 31, 2007. (source: Double-Tongued Dictionary)
Further reading
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Ever wonder what medieval England looked and sounded like? In Old English, the word hord meant “treasure” and your wordhord was the treasure of words locked up inside you. A delightful new book uses the language of that period to create...