Usage: 2 forms in 11 verses
Form Translated As     In Verse(s)
κιδάρεισ turbans LXX.Exod.28.40LXX.Exod.29.9LXX.Exod.39.27LXX.Lev.8.13LXX.Ezek.44.18
κίδαριν turban LXX.Exod.28.4LXX.Exod.28.39LXX.Lev.16.4LXX.Ezek.21.26LXX.Zech.3.5LXX.Zech.3.5

Liddell-Scott-Jones

κίδαρις (kidaris) a turban G:N-F

κίδαρις, εως, ,

Persian head-dress, probably ={τιάρα},{κυρβασία}, [Refs 1st c.AD+]:—also κίταρις in [Refs 5th c.BC+] κίτταρις [Refs 5th c.AD+]

__2 turban of Jewish high priest, [LXX]
__II an Arcadian dance, [Refs 2nd c.AD+]

LSJ Scripture Refs: LXX.Exod.28.4