obsidian
🇺🇸
/əbˈsɪdiən/
🇬🇧
/əbˈsɪdiən/
noun
R
A naturally occurring, volcanic glass that is usually black or dark in color.
The ancient people used sharp obsidian blades for hunting and warfare.
古代人使用锋利的黑曜石刀片进行狩猎和战争。
translation
黑曜岩
词形变化
Plural
obsidians