noun (plural ignes fatui) Etymology: Medieval Latin, literally, foolish fire Date: 1563 a light that sometimes appears in the night over marshy ground and is often attributable to the combustion of gas from decomposed organic matter, a deceptive goal or hope
IGNIS FATUUS
Meaning of IGNIS FATUUS in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012