rock salt

noun

: common salt occurring in solid form as a mineral
also : salt artificially prepared in large crystals or masses

Examples of rock salt in a Sentence

I put some rock salt on the sidewalk to melt the ice.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
By Con Ed’s rationale, rock salt was to blame, not its antiquated and poorly maintained infrastructure. Voice Of The People, New York Daily News, 5 Mar. 2026 Some TikTokers say that using Himalayan rock salt is better than regular table salt. Stephanie Brown, Verywell Health, 25 Feb. 2026 Pure rock salt has to be scattered on the decks afterward to remove any remaining snow and ice. ABC News, 24 Feb. 2026 At the heart of their interest is a thick layer of rock salt known as the Boree Salt deposit. Rupendra Brahambhatt, Interesting Engineering, 22 Feb. 2026 See All Example Sentences for rock salt

Word History

First Known Use

1693, in the meaning defined above

Time Traveler
The first known use of rock salt was in 1693

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Cite this Entry

“Rock salt.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rock%20salt. Accessed 9 Mar. 2026.

Kids Definition

rock salt

noun
: common salt in large crystals or masses

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