ignis fatuus plural
ig·nis fat·u·us
The plural form of ignis fatuus is ignes fatui
I iDefinitions
- noun plural ignis fatuus 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. 1
- noun plural ignis fatuus something deluding or misleading. 1