dirty coal

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English[edit]

Etymology[edit]

Due to the smell it gives off when burned.

Noun[edit]

dirty coal (uncountable)

  1. (informal) lignite
    • 1978 February 14, “Texas Turning to Its Reserves of Lignite”, in New York Times‎[1]:
      Lignite's nickname “dirty coal,” suggests its one major drawback, but its allure is clearly its cost. Lignite is cheaper than most other energy sources.
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