One of the mysteries of the English language finally explained.
An intense red light produced by pyrotechnics; (now chiefly historical) a mixture ignited to produce this, typically containing strontium.
Poetic. That resembles red fire. rare.
Late 17th century; earliest use found in Paul Rycaut (1629–1700), diplomat and author. From red + fire.
red fire/ˈrɛd ˈfʌɪə/
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