fairy dance

noun2

1. •
   A dance performed by fairies, especially one in which humans are enticed only to find that when released years or centuries have passed.
2. •
   (no longer used) Synonym of fairy ring (“a ring of fungi; a place where fairies dance”).

   • Fairy-circles, fairy-rings, or fairy-dances, circles of coarse green grass often seen in meadows and downs, and attributed to the dancing of the fairies. — 1846