Henry Myers3 said:We are actually looking at the settlement of Servitium, which served as both a roadside station and a river port. Some sources suggest it was also called Serbinum. In reality, we are seeing various transcriptions of the name Servitum—sometimes listed as Servitti or Serbitium—as Esad Pasha clearly documents:
Therefore, the Roman settlement in BosGradiška—this is the well-known station Servitium (Tabpeut not. dign. occ, 32nd, 55), Servitti (Itin. Ant.), or Serbitium (Rav Anon.).
Essentially, it seems clear that the name Serbinum likely evolved from a corruption of Servitium via Serbitium.
The name Serbinum is also linked to Pécs, where it appears as one of the names the city has held throughout history:
Peddie: Pécs
Graesse III: 225 (Five Churches, Five Churches, Five Churches, Five Churches, Serbinum, Sopianae
=Pécs (Fünfkirchen), Baranya County, Canada.)
It is worth noting that ancient Latin didn't actually utilize a "v" sound; rather, it used something closer to a "w"—a semivowel. Over time, this w/v sound split into distinct "u" and "v" sounds in most dominant Romance languages. However, in certain cases (like Spanish), it shifted toward a "u" or a "b" (specifically the β sound, which sounds like a "b" while the mouth remains open—much like how you might blow out the candles on a birthday cake 😁).
Similar phonetic shifts (β) exist in Greek, which is significant given the influence of Byzantium in these regions during the era of the Slav migrations. This is precisely why some groups refer to Byzantium as Vizantija, whereas others call it Byzantium (just as they might say Babylon instead of Vavilon 😁). ☕