A sudden burst or flash of fire; a momentary bright flame or flash of light from fire (archaic/dialectal).
Compound of 'fire' and 'flaught' (from Middle English 'flaught', possibly related to 'flight' or dialectal words for sudden movement). An archaic or regional British term rarely used in modern English.
'Fireflaught' is the kind of wonderfully specific archaic word that perfectly captures one moment in time—that initial instant when a fire suddenly flares up—but modern English simplified it away in favor of just saying 'flash of fire'.
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