elf-dance

noun2

1. •
   A dance performed by elves, especially one in which humans are enticed only to find that when released years or centuries have passed.

   • Many village musicians have been known, who have learned from him to play this elf-dance, and have sometimes played the first parts of it at Christmas parties and elsewhere. — 1896
2. •
   Synonym of fairy ring (“a ring of fungi; a place where fairies dance”).

   • The Elves are extremely fond of dancing in the meadows, where they form those circles of a livelier green which from them are called Elf-dance (Elfdans). — 1850