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will-o'-the-wisp

PRIMARY MEANINGS OF: will-o'-the-wisp

1
n
a pale light sometimes seen at night over marshy ground
2
n
an illusion that misleads
FULL DEFINITIONS OF: will-o'-the-wisp
1

n a pale light sometimes seen at night over marshy ground

Synonyms:
friar's lantern, ignis fatuus, jack-o'-lantern
Type of:
light, visible light, visible radiation
(physics) electromagnetic radiation that can produce a visual sensation
2

n an illusion that misleads

Synonyms:
ignis fatuus
Type of:
fancy, fantasy, illusion, phantasy
something many people believe that is false
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