The Collaborative International Dictionary
Aonian \A*o"ni*an\ ([asl]*[=o]"n[i^]*an), a. [From Aonia, a part of B[oe]otia, in Greece.] Pertaining to Aonia, in B[oe]otia, or to the Muses, who were supposed to dwell there.
Aonian fount, the fountain of Aganippe, at the foot of Mount Helicon, not far from Thebes, and sacred to the Muses.
Wiktionary
a. Pertaining to Aonia, or to the Muses, who were supposed to dwell there. n. An inhabitant of Aonia.
Usage examples of "aonian".
Aeetes gave them for the contest the fell teeth of the Aonian dragon which Cadmus found in Ogygian Thebes when he came seeking for Europa and there slew the--warder of the spring of Ares.
Methinks we march as Meleager did, Environed with brave Argolian knights, To chase the savage Calydonian boar, Or Cephalus, with lusty Theban youths, Against the wolf that angry Themis sent To waste and spoil the sweet Aonian fields.
And Agenor's son, Cadmus, sowed them on the Aonian plains and founded an earthborn people of all who were left from the spear when Ares did the reaping.