ἄβα
From LSJ
οὕτω τι βαθὺ καὶ μυστηριῶδες ἡ σιγὴ καὶ νηφάλιον, ἡ δὲ μέθη λάλον → silence is something profound and mysterious and sober, but drunkenness chatters
English (LSJ)
τρόχος, ἢ βοή, Hsch. ἀβάγητρον· λεπτόν, Hsch., cf. ἀβαήρ.
Greek (Liddell-Scott)
ἄβα: ἡ, Δωρ. ἀντὶ ἤβη.