rock glass
A knife with a handle at each end, used for shaving hoops for barrels by drawing it towards oneself.
(chemistry, mining, geology, artisanship) Metastable glass of volcanic or dyke origin. / Alternative form of rocks glass (“short cylindrical liquor stoop”)
A wooden sword-like weapon of various native cultures of Central America and South America.
(UK, law, obsolete) A third part of the profits of fines and penalties imposed at the country court, which was among the perquisites enjoyed by the earl.
地質学者は、冷却履歴を調べるために顕微鏡でその薄片の火山起源または岩脈起源のメタ安定ガラスを観察した。
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