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

This old-fashioned instrument relied on a hand crank, as well as an outside metal canister that contained ice and rock salt to freeze its contents of milk, cream, sugar, and mix-ins. —Joey Skladany, Southern Living, 16 Dec. 2025

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

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

Word History

First Known Use

1693, in the meaning defined above

Rhymes for rock salt

• asphalt
• assault
• basalt
• cobalt
• default
• exalt
• gestalt
• alt
• fault
• gault
• halt
• malt

Kids Definition

rock salt

noun

: common salt in large crystals or masses