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 colour
  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, characterised by conspicuous consumption.
  7. (skiing) A symbol representing a steep and relatively difficult trail, typically 40% gradient or above.

Coordinate terms

(skiing):

  • green circle
  • blue square
  • bunny hill

Derived terms
  • (skiing): double black diamond

See also
  • ♦ (Unicode black diamond)
This article is issued from Wiktionary. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.