Definition of rock salt
: 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.
First Known Use of rock salt
ROCK SALT Defined for English Language Learners
Definition of rock salt for English Language Learners
: salt that is in the form of large pieces or crystals
ROCK SALT Defined for Kids
Definition of rock salt for Students
: common salt in large crystals
Seen and Heard
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