Where does “ترازو” come from?

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

Ancestry of “ترازو”, step by step

StepLanguageWordMeaning
1Persianترازوbalance; scales
2Middle Persiantarāzūgscales
3Avestan????.???—

Words derived from “ترازو”

Every word from Avestan ????.??? →Every word from Middle Persian tarāzūg →Every word from Persian ترازو →