Dreye權威釋義|will-o'-the-wisp

n.

同義參見:

以上來源於：《英漢大辭典》

n.

a phosphorescent light seen hovering or floating at night on marshy ground, thought to result from the combustion of natural gases.
a person or thing that is difficult or impossible to reach or catch.

C17: orig. as Will with the wisp, the sense of wisp being ‘handful of (lighted) hay’.

以上來源於：《簡明牛津英語詞典》