Pieces of partially burnt or fully burnt wood or coal that glow with heat and produce warmth, used in fires.
From Old English 'col' and Germanic roots. The word has stayed remarkably unchanged for over 1,000 years because the object itself—burning fuel—remained central to human survival.
The phrase 'heaping coals of fire on someone's head' comes from ancient texts about shame and purification—so coals in literature often symbolize guilt, judgment, or spiritual burning.
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