thun.der.stone

thunderstone的音标和读音：
DJ音标发音： [ˈθʌndəˌstoun]
KK音标发音： [ˈθʌndɚˌston]

thunderstone的词性：
n.（名词）

1. Any of various mineral concretions, such as a belemnite, formerly supposed to be thunderbolts.
如过去被认为是雷石的箭石等各种矿物结核

2. Archaic A flash of lightning conceived as a stone; a thunderbolt.
【古语】 被想像为石头的闪电；雷石