Noun
Aeolic Greek (uncountable)
The dialect group of Ancient Greek spoken in Thessaly, Boeotia, and Aeolia and on the island of Lesbos, most closely related to Arcadocypriot and contributing some forms to Epic Greek. The language of Sappho and Alcaeus of Mytilene.
Synonym: Aeolic
Sappho's Aeolic Greek dialect is a difficult one, and by Roman times it was arcane and ancient as well, posing considerable obstacles to her continued popularity. Source: Internet