obsidian
/əbˈsɪd.i.ən/
A black volcanic glass used for tools and decoration.
“She admired the sharp edge of the obsidian blade.”
My Deckに追加
/əbˈsɪd.i.ən/
A black volcanic glass used for tools and decoration.
“She admired the sharp edge of the obsidian blade.”
My Deckに追加