Definition of ignis fatuus in English:

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ignis fatuus

Pronunciation: /ˌɪɡnɪs ˈfatjʊəs/

noun (plural ignes fatui /ˌɪɡniːz ˈfatjʊʌɪ/ /ˌɪɡneɪz/ /ˈfatjʊiː/)

A will-o'-the-wisp.
Example sentences
  • But it's impossible to describe these paintings, also because they hit your soul like burning arrows and recall the sad and reddish dance of the ignis fatuuses.
  • How is the gas of ignis fatui ignited on bogs and meadows?


Mid 16th century: modern Latin, literally 'foolish fire' (because of its erratic movement).

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