JMdict: 2713670

油石 【あぶらいし】

  1. [n] stone with oil-like lustre (luster)
  2. [n] coal; charcoal
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Kanji in this word:

Kanji Meanings On Readings Kun Readings Grade
Oil, Fat ユ, ユウ あぶら 3
Stone セキ, シャク, コク いし 1