Found 2 items, similar to ignis fatuus.
English → English (WordNet) Definition: ignis fatuus ignis fatuus n 1: a pale light sometimes seen at night over marshy ground [syn: friar's lantern, jack-o'-lantern, will-o'-the-wisp] 2: an illusion that misleads [syn: will-o'-the-wisp]
English → English (gcide) Definition: Ignis fatuus Ignis fatuus \Ig“nis fat”u*us\; pl. Ignes fatui. [L. ignis fire + fatuus foolish. So called in allusion to its tendency to mislead travelers.] 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. [1913 Webster] 2. Fig.: A misleading influence; a decoy. [1913 Webster] Scared and guided by the ignis fatuus of popular superstition. --Jer. Taylor. [1913 Webster]