rock salt

American  

noun

1. common salt occurring in extensive, irregular beds in rocklike masses.

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rock salt British  

noun

1. another name for halite

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Etymology

Origin of rock salt

First recorded in 1700–10

Example Sentences

The winter storm that sent Americans scurrying to buy snowblowers, shovels, and rock salt now has them in a deep freeze.

From Barron's • Jan. 27, 2026

"Although we focus on rock salt HEOs, our methods provide a broad adaptable framework for enabling uncharted, promising chemically disordered complex oxides."

From Science Daily • Dec. 4, 2025

It also warns owners to wash their paws thoroughly after walking in areas that may have been gritted with rock salt, which can be poisonous to pets.

From BBC • Jan. 17, 2024

Around 200,000 people in the Alagoas state’s capital of Maceio were affected by the excessive extraction of rock salt, according to the Brazil Senate’s website.

From Seattle Times • Jul. 21, 2023

We made two more pots of graveyard dirt mixed with brick dust and some rock salt; then we poured it in a wide circle all around the cabin.

From "Root Magic" by Eden Royce