sea salt

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun Salt that is produced by the evaporation of sea water and that contains sodium chloride and trace elements such as sulfur, magnesium, zinc, potassium, calcium, and iron.

from The Century Dictionary.

• noun Sodium chlorid, or common salt, obtained by evaporation of sea-water. See salt.

from the GNU version of the Collaborative International Dictionary of English.

• Common salt, obtained from sea water by evaporation.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun salt prepared by evaporating sea water.