rock oil
noun
: petroleum
Example Sentences
Recent Examples on the Web Distilling rock oil produced multiple interesting compounds, one of which looked like an ideal illuminant. 
Charles R. Morris, WSJ, 21 June 2018
Charles R. Morris, WSJ, 21 June 2018 Word History
First Known Use
1668, in the meaning defined above
- close-in weapons system
- close-knit
- close-lipped
- close-minded
- close-quarter
- close-quartered
- close-reefed
- close-rounded
- close-set
- close-tongued
- close-up
- close-ups
- close/dear/near to one's heart
- close/hard/hot on someone's or something's heels
- close/seal the deal
- close/tight finish
- closeable
- closecross
- closed
- closed (down)
- closed (off)
- closed account
- closed banknote
- closed bolt
- closed book