Last Updated：2025/11/28
A coal which has a grade between bituminous coal and anthracite, and which was once widely used as a fuel for steam engines in ships and locomotives.
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steam coal
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Source Word
steam coal
Noun
uncountable
usually
Japanese Meaning
ビチュミナス石炭と亜炭の中間の品質を持ち、かつかつて船舶や機関車の蒸気機関の燃料として広く使用された石炭。
（ plural ）
