bas ‧ alt /ˈbæsɔːlt, bəˈsɔːlt $ ˈbæsɒːlt, ˈbeɪ-/ BrE AmE noun [uncountable]
[ Date: 1600-1700 ; Language: Latin ; Origin: basaltes , from Greek basanos 'stone used to test the purity of gold' , from Egyptian bhnw ]
a type of dark green-black rock
bas ‧ alt /ˈbæsɔːlt, bəˈsɔːlt $ ˈbæsɒːlt, ˈbeɪ-/ BrE AmE noun [uncountable]
[ Date: 1600-1700 ; Language: Latin ; Origin: basaltes , from Greek basanos 'stone used to test the purity of gold' , from Egyptian bhnw ]
a type of dark green-black rock
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012