Where does “duo” come from?

duo (Albanian) comes from Proto-Albanian dāusnja, from Proto-Indo-European ǵews- — to taste, try.

Ancestry of “duo”, step by step

StepLanguageWordMeaning
1Proto-Albaniandāusnja—
2Proto-Indo-Europeanǵews-to taste, try
Every word from Proto-Indo-European ǵews- →Every word from Proto-Albanian dāusnja →