名詞 basalt:

1. the commonest type of solidified lava; a dense dark grey fine-grained igneous rock that is composed chiefly of plagioclase feldspar and pyroxene

ba.salt

n.（名詞）
A hard, dense, dark volcanic rock composed chiefly of plagioclase, pyroxene, and olivine, and often having a glassy appearance.
玄武巖：一種硬的、致密的、黑色的火山巖。它主要由斜長石、輝石和橄欖石組成，外表經(jīng)常很光滑
A kind of hard unglazed pottery.
一種硬的素燒的陶器

來源：
Latin basaltôs
拉丁語 basaltôs
alteration of basanotôs [touchstone]
basanotôs的變化 [試金石]
from Greek basanitôs (lithos)
源自 希臘語 basanitôs (lithos)
from basanos
源自 basanos
[of Egyptian origin]
[源于埃及的]

【引伸】
basal.tic