A glowing or smoldering piece of coal or wood in a dying fire, still giving off heat.
From Old English 'æmyrge' and related to Dutch 'amber' and German 'Ember'. The origin possibly connects to 'embers' being what remains after flaming wood dies down.
Embers are so hot you'd think they're still actively burning—they can reach 1,000 degrees Fahrenheit without visible flames! That's why 'blowing on embers to start a fire' is one of humanity's oldest survival techniques.
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