WordReference Random House Learner's Dictionary of American English © 2025
ˈrock ˌsalt, n. [uncountable]
  1. Mineralogycommon salt, sodium chloride, occurring in rocklike masses.

WordReference Random House Unabridged Dictionary of American English © 2025
rock′ salt′, 
  1. Mineralogycommon salt occurring in extensive, irregular beds in rocklike masses.
  • 1700–10

Collins Concise English Dictionary © HarperCollins Publishers::
rock salt
  1. another name for halite
'rock salt' also found in these entries (note: many are not synonyms or translations):
evaporite - halite - salt

Forum discussions with the word(s) "rock salt" in the title:


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