κοῖλος .κοῖλος, η, ον hollow, hollowed, epith. of ships, which in early times were hollowed out of trees, Hom.; later, κοίλη ναῦς was the hold of the ship, Hdt., Xen.; so, ἡ κοίλη alone, Theocr.:—of the Trojan horse, κ. λόχος, κ. δόρυ Od.; κ. κάπετος, of a grave, Il.; κ. δέμνια, of the bed when no one is in it, Soph. of Places, lying in a hollow or forming a hollow, κοίλη Λακεδαίμων the vale of L., Od.; κ. Θεσσαλία Hdt.; κ. Ἄργος Soph.; τὰ Κοῖλα τῆς Εὐβοίας Hdt.; ἡ Κοιλή the valley of the Ilissus, Hdt.:— κ. λιμήν of a harbour lying between high cliffs, Od.; κ. αἰγιαλός an embayed beach, Od.:— κ. ὁδός a hollow way, Il.:— κ. ποταμός a river nearly empty of water, Thuc. (so Virgil, cava flumina): metaph. of the voice, hollow, μυκάσατο κοῖλον Theocr.; φθέγγεσθαι κοῖλον Luc. as Subst. κοῖλον, ου, τό, a hollow, cavity, ravine, Plat.; like κοιλία, of the cavities in the body, τὰ κ. γαστρός Eur.; also, ἐν τῷ κοίλῳ καὶ μυχῷ τοῦ λιμένος Thuc.