Basalt
Ba`salt´
| n. | 1. | (Geol.) A rock of igneous origin, consisting of augite and triclinic feldspar, with grains of magnetic or titanic iron, and also bottle-green particles of olivine frequently disseminated. |
| 2. | An imitation, in pottery, of natural basalt; a kind of black porcelain. |
| Noun | 1. |  basalt - the commonest type of solidified lava; a dense dark gray fine-grained igneous rock composed chiefly of calcium-rich plagioclase feldspar and pyroxene |