LSJ
ἡ, a girls’ game, in which a ring was formed round a player called χελώνη, Poll. 9.125, Eust. 1914.54. The χελι- seems to be merely an iteration of the first syll. in χελώνη· cf. Carm.Pop. 21 (written χέλει χ. Eust. l.c.).
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)