What is "melingoi"

The Melingoi or Milingoi were a Slavic tribe that settled in the Peloponnese in southern Greece during the Middle Ages. Proto-Slavic tribes ( Sclaveni) settled throughout the Balkans following the collapse of the Byzantine Empire's defense of the Danube frontier in the early decades of the 7th century, with some groups reaching as far south as the Peloponnese. Of these, two groups are known by name from later sources, the Melingoi and the Ezeritai, of whom the Melingoi settled on the western slopes of Mount Taygetos. The origin and etymology of the Melingoi name is unknown.