Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun rock_oil

1 sense of rock oil

Sense 1
petroleum, crude oil, crude, rock oil, fossil oil, oil -- (a dark oil consisting mainly of hydrocarbons)
       => oil -- (a slippery or viscous liquid or liquefiable substance not miscible with water)
       => fossil fuel -- (fuel consisting of the remains of organisms preserved in rocks in the earth's crust with high carbon and hydrogen content)