1) Ancient Campanian 2) Ancient italian language 3) Bygone Campania dweller 4) Campanian language 5) Early Italian 6) Early native of Campania 7) Extinct Italic language 8) Extinct language of Italy 9) Inhabitant of old Italy 10) Italian 11) Italian tongue 12) Italic language 13) Native of ancient campania Found on https://www.crosswordclues.com/clue/oscan
(from the article `Pompeii`) It seems certain that Pompeii, Herculaneum, and nearby towns were first settled by Oscan-speaking descendants of the Neolithic inhabitants of ... Found on http://www.britannica.com/eb/a-z/o/34
Os'can adjective Of or pertaining to the Osci, a primitive people of Campania, a province of ancient Italy. -- noun The language of the Osci. Found on http://www.encyclo.co.uk/webster/O/36
one of an ancient people of south-central Italy. · the Indo-European, probably Italic, language of the Oscans, written in an alphabet derived from the Etruscan. Found on https://www.infoplease.com/dictionary/oscan