black diamond

English

Noun

black diamond (countable and uncountable, plural black diamonds)

  1. Hematite.
  2. Anthracite.
  3. Carbonado, a natural diamond that is black in color.
  4. A black synthetic diamond, specifically a CVD polycrystalline diamond or HPHT polycrystalline compact diamond.
  5. Boron carbide.
  6. (South Africa, derogatory) A member of the new affluent black middle class in South Africa, characterized by conspicuous consumption.
  7. (skiing) A symbol representing a steep and relatively difficult trail, typically of a 40% gradient or above.

Coordinate terms

(skiing):

Derived terms

See also

  • ♦ (Unicode black diamond)
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