ignis fatuus

Noun
  1. A pale light sometimes seen at night over marshy ground (synset 111479768)
    is a type of: light, visible light, visible radiation - (physics) electromagnetic radiation that can produce a visual sensation
    same as: friar's lantern, jack-o'-lantern, will-o'-the-wisp
  2. An illusion that misleads (synset 105905122)
    is a type of: fancy, fantasy, illusion, phantasy - something many people believe that is false
    same as: will-o'-the-wisp

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