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.
While deicing salts, most commonly sodium chloride, or rock salt, may be the go-to to melt ice off your driveway, walkways and roads, experts advise considering other options for sustainable use. Jenna Prestininzi, Freep.com, 10 Dec. 2025 Instead of buying rock salt, choose a safer de-icer like calcium chloride or magnesium chloride. Brandee Gruener, Southern Living, 29 Nov. 2025 For instance, there is a stunning 12-foot bench made of 230 blocks of ancient rock salt mined in Loulé. Chadner Navarro, Vogue, 30 Oct. 2025 Black salt, also known as kala namak or black Himalayan salt, is a type of rock salt used in Indian cooking. Lindsey Desoto, Health, 24 Sep. 2025 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

Browse Nearby Words

Cite this Entry

“Rock salt.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rock%20salt. Accessed 16 Dec. 2025.

Kids Definition

rock salt

noun
: common salt in large crystals or masses

More from Merriam-Webster on rock salt

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!