Definition of "common salt" [common salt]

• See salt. (noun)
• Sodium chloride. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Of this 3 1/2 lbs. nearly 1 lb. is common salt (chloride of sodium), about 2 lbs. chloride of magnesium, and less than 3 a lb. chloride of calcium (or muriate of lime)."