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.
古代人使用鋒利的黑曜石刀片進行狩獵和戰爭。
translation
黑曜岩
詞形變化
Plural
obsidians