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

Several substances like charcoal, rock salt, cat litter, and baking soda can help to draw moisture out of the air. —Hallie Milstein, Southern Living, 17 July 2025

Purchasing rock salt may be difficult due to snow events, but checking the local Walmart, Lowe’s, Home Depot and similar warehouse stores could yield positive results. —Mars Salazar, Austin American Statesman, 18 Feb. 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, 12 Mar. 2025

Be sure to spray thoroughly underneath the car and inside the wheel wells to loosen road grime and clear the areas of residual rock salt. —Jim Gorzelany, Forbes, 28 Feb. 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