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

Placing rock salt before nightfall could save you lots of time getting your car safely out of the ice by preventing ice from forming. —Katey Psencik, Austin American Statesman, 23 Jan. 2026

Unfortunately, rock salt and other de-icers can take time to work, especially on a cold, cloudy day. —Brandee Gruener, Southern Living, 23 Jan. 2026

The undeniable star is the Wagyu strip loin, presented perfectly pink in the middle and simply flavored with rock salt and served with crispy truffle fries and a chimichurri. —Condé Nast, Condé Nast Traveler, 22 Jan. 2026

In winter, add warm clothing, extra blankets, rock salt, sand and snow tools, and keep heating fuel on hand. —Evan Moore, Charlotte Observer, 22 Jan. 2026

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