1 rock oil | Definition of rock oil
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rock oil

noun

Definition of rock oil

: petroleum

Examples of rock oil in a Sentence

Recent Examples on the Web

 Distilling rock oil produced multiple interesting compounds, one of which looked like an ideal illuminant. — Charles R. Morris, WSJ, "‘Energy’ Review: The Path to Power," 21 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'rock oil.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of rock oil

1668, in the meaning defined above

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More from Merriam-Webster on rock oil

Britannica.com: Encyclopedia article about rock oil

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