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ignis fatuus

American  
[ig-nis fach-oo-uhs] / ˈɪg nɪs ˈfætʃ u əs /

noun

ignes fatui plural
  1. Also called friar's lantern, will-o'-the-wisp.  a flitting phosphorescent light seen at night, chiefly over marshy ground, and believed to be due to spontaneous combustion of gas from decomposed organic matter.

  2. something deluding or misleading.


ignis fatuus British  
/ ˈɪɡnɪs ˈfætjʊəs /

noun

  1. another name for will-o'-the-wisp

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Noun Inflected Forms

Etymology

Origin of ignis fatuus

1555–65; < Medieval Latin: literally, foolish fire

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Silent and alone, she saw the signal-light of the steamer moving like an ignis fatuus along the empurpled bosom of the water—at length suddenly disappearing behind the battlements of the Fort.

From The Child Wife by Reid, Mayne

It flashed through his mind that he had wasted two months pursuing an ignis fatuus, only to have nothing but bitterness at the end, when it might have been ——!

From Six Prize Hawaiian Stories of the Kilohana Art League by Armstrong, W. N.

Love is not the offspring of an hour or a day, nor is it the ignis fatuus which plays about the brain, and disturbs the sleep of the youth and the maiden in their teens.

From Wilson's Tales of the Borders and of Scotland, Vol. 9 by Various

Nor he, nor any of the brave Plantagenets ever came to Ireland, for they were pursuing an ignis fatuus in France, instead of attending to their own business at home.

From My Lords of Strogue, Vol. I (of III) A Chronicle of Ireland, from the Convention to the Union by Wingfield, Lewis

A few nights afterwards it was there again, and must clearly have been some kind of ignis fatuus.

From Wild Life in a Southern County by Jefferies, Richard

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