Meanings
(crude oil; coal; black pepper): From its black colour and high value.
How to pronounce "black gold":
AU
Raw petroleum; crude oil.
Black pepper, in the context of being a historically valuable spice.
Black-coloured gold, variously produced by patination, deposition, oxidation, etc. and used in jewellery or in high-technology applications.
Coal.
Example Sentences
1
Oil is often referred to as black gold.
2
The economy of some countries heavily relies on black gold.
3
Exploring and extracting black gold can be a complex process.
4
The discovery of black gold transformed the region into a prosperous hub.
5
Investors are always looking for opportunities in the black gold industry.
