rock dust

1 of 2

noun

: pulverulent rock (as shale or limestone) used in rock-dusting

called also stone dust

rock-dust

2 of 2

transitive verb

: to spread or distribute rock dust in (coal mine workings) to reduce the explosion hazard

Word History

Etymology

Transitive verb

rock dust

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Dictionary Entries Near rock dust

rock drill

rock dust

rock-dust

See More Nearby Entries 

Cite this Entry

“Rock dust.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rock%20dust. Accessed 1 Dec. 2024.

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