black gold

black gold (uncountable)

  1. (informal, idiomatic) Raw petroleum; crude oil.
  2. Black-coloured gold, variously produced by patination, deposition, oxidation, etc. and used in jewellery or in high-technology applications.
Synonyms Translations
  • French: or noir
  • German: schwarze Gold
  • Italian: oro nero
  • Portuguese: ouro negro
  • Russian: чёрное зо́лото
  • Spanish: oro negro

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