will-o'-the-wisp

Từ điển WordNet v3.1 - WordNet Dictionary

noun

1. a pale light sometimes seen at night over marshy ground
• Syn:
friar's lantern, ignis fatuus, jack-o'-lantern
• Hypernyms:
light, visible light, visible radiation
2. an illusion that misleads
• Syn:
ignis fatuus
• Hypernyms:
illusion, fantasy, phantasy, fancy