will-o'-the-wisp

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will-o'-the-wisp,

phenomenon known also as ignis fatuus and jack-o'-lantern. It is seen at night as a pale, flickering light over marshland. There is no generally accepted explanation for it; it may result from the spontaneous ignition of gases (e.g., methane) produced by the disintegration of dead plant or animal matter, or it may be a form of phosphorescence. The eerie lights have given rise to many superstitions.
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References in periodicals archive ?
8) Who supplied the voice of Will-O-The-Wisp on children''s TV?
Paddy Bradley and Paul Murphy were outstanding while Colm Devlin is a real will-o-the-wisp type player."
Handgun accuracy, that veiled phantom we gunsmiths chase our entire lives, seems like a Will-O-the-Wisp as it comes and goes at a frustrating pace.