master key înseamnă în Germană

der Hauptschlüssel [des Hauptschlüssels; die Hauptschlüssel]▼◼◼◼Substantiv
[ˈhaʊ̯ptˌʃlʏsl̩]

der Zentralschlüssel [des Zentralschlüssels; die Zentralschlüssel]▼Substantiv
[ʦɛnˈtʀaːlˌʃlʏsl̩]