A building or structure used for storing coal, typically found behind houses or attached to industrial facilities.
Coal + shed. Simple compound of coal with shed (a small building). Became common in the 19th-20th centuries when coal heating was standard in homes.
Every Victorian house seemed to have a coalshed—they were grimy, sooty structures that were nonetheless essential to home comfort, and cleaning them was famously one of the dirtiest household chores!
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