Where does “аба-вуа” come from?

аба-вуа (Russian) comes from French abat-voix, from French voix, from Middle French voix, from Old French voiz, from Latin vōx, from Proto-Italic wōks, from Proto-Indo-European wṓkʷs, from Proto-Indo-European wekʷ- — to speak, to sound out.

аба-вуа (Russian): abat-voix