I.one wing of a pair of double gates, Hdt.: mostly in pl. the gates of a town, opp. to θύρα (a house-door), Il., attic
2.in Trag., sometimes, of the house-door.
II.generally, an entrance, of the liver, π. καὶ δοχαὶ χολῆς the orifice and receptacle of gall, Eur.
2.an entrance into a country through mountains, a mountain-pass, Hdt.: esp. Πύλαι, ῶν, αἱ, the common name for Θερμοπύλαι, the pass round the mountains from Thessaly to Locris, considered the gates of Greece, id=Hdt.; so, of the pass from Syria into Cilicia, Xen., etc.