Ignis Fatuus Synonyms & Definitions

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• Ignis fatuusDefinition & Meaning in English

1. () A phosphorescent light that appears, in the night, over marshy ground, supposed to be occasioned by the decomposition of animal or vegetable substances, or by some inflammable gas; -- popularly called also Will-with-the-wisp, or Will-o-the-wisp, and Jack-with-a-lantern, or Jack-o-lantern.
2. () Fig.: A misleading influence; a decoy.