the.com/wisp
A nothing made visible — fog, hair, or ghost-light, all caught mid-vanish.
will-o-the-wispSwamp gas glowing lured travelers to drowning deaths
old norseRoot word meant a bundle of hay or straw
fairy loreFolklore blamed wisps on mischievous spirits guarding treasure
chemistryLikely phosphine and methane igniting over decaying marsh matter