αὐλός ἄημι to blow a flute or rather clarionet (for it was played by a mouthpiece, γλωσσίς, Aeschin.), Il., etc.; αὐλοὶ ἀνδρήϊοι and γυναικήϊοι, Lat. tibiae dextrae and sinistrae, bass and treble, Hdt.; sometimes one person played two αὐλοί at once, Theocr.; αὐλὸς Ἐνυαλίου, i. e. a trumpet, Anth.:— ὑπʼ αὐλοῦ to the sound of the flute, Hdt.; so, πρὸς αὐλόν, ὑπὸ τὸν αὐλόν Xen. any tube or pipe, as the socket of a spear-head, the groove into which the tongue of a buckle fitted, Hom.; the pipe of bellows, Thuc.:— αὐλὸς παχύς, in Od., seems to mean a jet of blood through the tube of the nostril.