Where does “тӕраз” come from?

тӕраз (Ossetian) comes from Persian ترازو, from Middle Persian tarāzūg, from Avestan ????.???.

тӕраз (Ossetian): scales, balance

Definitions

  1. scales, balance

Ancestry of “тӕраз”, step by step

StepLanguageWordMeaning
1Persianترازوbalance; scales
2Middle Persiantarāzūgscales
3Avestan????.???—
Every word from Avestan ????.??? →Every word from Middle Persian tarāzūg →Every word from Persian ترازو →