石せき脳のう油ゆ

noun

oil; petroleum

Archaic term for petroleum, now replaced by 石油 (せきゆ). Found in historical or technical texts from the early modern period.

• 江え戸ど時じ代だいの文ぶん献けんに「石せき脳のう油ゆ」という語ごが見みられる。

  The word 石脳油 appears in documents from the Edo period.