breathe with the mouth wide open
Ancient Greek word, found 17 times in the texts on Socratos.
Theocritus, Εἰδύλλια 2.148: Ἀῶ τὰν ῥοδόπαχυν ἀπʼ Ὠκεανοῖο φέροισαι.
Sophocles, Philoctetes 732: ἀᾶ, ἀᾶ.
Bacchylides, Epinicians 10.9: Ἀ[γλ]αῷ καὶ νῦν κασιγνήτας ἀκοίτας