Basalt
WordNet
noun
(1) The commonest type of solidified lava; a dense dark grey fine-grained igneous rock that is composed chiefly of plagioclase feldspar and pyroxene
WiktionaryText
Etymology
, a misspelling of , from , from , from Egyptian bauhan 'slate'.
Noun
- A hard rock of varied mineral content; volcanic in origin, it makes up much of the Earth's crust.
- A type of unglazed pottery.