opal
意味
- オパール,蛋白石(乳白色でにじ色に変化する光をもつ宝石)
語源
英語の原文（Wiktionary）
In Florio’s A World of Words 1598 as opale, from French opale, from Latin opalus, from Byzantine Greek ὀπάλλιος (opállios), from Sanskrit उपल (upala, “gem, stone”), from उपरि (upári, “the upper millstone”). Distantly related to over.