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rock salt

noun
1.
common salt occurring in extensive, irregular beds in rocklike masses.
Origin of rock salt
1700-1710
1700-10
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for rock salt
Contemporary Examples
Historical Examples
  • Another cement is made of a bes of brick dust, a third of rock salt, an uncia of saltpetre, and half an uncia of refined salt.

    De Re Metallica Georgius Agricola
  • Once I came up from Wild Cat to get a load of rock salt for my cattle.

  • Bathing the head in a strong solution of rock salt, is said to restore gray hair in some cases.

    Our Deportment John H. Young
  • Laorty-Hadji is mistaken in his idea that they repose on a bed of rock salt.

    The Desert World Arthur Mangin
  • rock salt can be had at feed-stores when not found at grocers'.

    The Century Cook Book Mary Ronald
  • rock salt forms the most common and practical source of supply.

  • No damage is done to the surface by the mining of this lower bed of rock salt.

  • He's of the salt of the earth; rock salt, but full flavored.

    The Helpers Francis Lynde
British Dictionary definitions for rock salt

rock salt

noun
1.
another name for halite
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Difficulty index for rock salt

Few English speakers likely know this word

Word Value for rock

10
11
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