Last seen in:
- New York Times - Oct 20 2022
- Universal - May 2 2021
- The Times - Concise - Times Concise No 7868
- USA Today - May 21 2016
- New York Times - Apr 20 2016
- The Times - Concise - Times2 Concise 6953 - February 19, 2016
- USA Today - Dec 17 2015
- The Times - Concise - Times2 Concise 6894 - December 12, 2015
- USA Today - Oct 22 2015
- The Times - Concise - Times2 Concise 6366 - April 4, 2014
Related Clues:
- Dark glass formed by cooling lava
- Lava
- Moon rock makeup
- Dark igneous rock
- Dense volcanic rock
- Certain igneous rock
- Volcanic glass
- A hard black volcanic glass
- Dark rock of volcanic origin
- Black volcanic rock
- Type of rock is a blast, oddly
- Dark glassy rock formed from lava
- It takes a saline degree to make a rock of this
- To a degree the sailor gets stoned, perhaps
- Rock to a certain degree over the sailor