from The Century Dictionary.
- noun The will-o'-the-wisp; an ignis fatuus.
Sorry, no etymologies found.
While she follows the mad fen-fire that conducts her to her doom.
Rose and walked awhile alive, though mocked as whom the fen-fire leads
They will invent, for all that is incomprehensible, words and numbers; and heap system upon system, till they have brought deeper darkness upon the earth, through which doubt, like the fen-fire, will only shine to allure the wanderer into the morass.