A.hollow, Hom.mostly as epith. of ships, “κ. νῆες” Il.1.26, al. (later κ. ναῦς hold of the ship, Hdt.8.119, X.HG1.6.19, D.32.5; so ἡ κ. alone, Theoc.22.12, Callix.1; “τὰ κ.” App.BC5.107); κ. λόχος, κ. δόρυ, of the Trojan horse, Od.4.277, 8.507; “κ. σπέος” 12.93; “κ. πέτρα” A. Eu.23, S.Ph.1081 (lyr.); κ. κάπετος, of a grave, Il.24.797, S.Aj.1165 (anap.), cf. Ant.1205; “κ. τάφρος” E.Alc.898 (anap.); “κ. νάρθηξ” Hes. Op.52; “ἄχερδος” S.OC1596; κ. φλέψ vena cava, Hp.Loc.Hom.3, Gal. 2.786, 4.668; “σφόνδυλος κ.” Pl.R.616d; of vessels, “ἀγγήϊα” Hdt.4.2; “κρατήρ” S.OC1593; “ζύγαστρον” Id.Tr.692; “κύλικος . . κοῖλον κύτος” Pl. Com.189; κ. ἄργυρος καὶ χρυσός silver and gold plate, Theopomp. Hist.283a, cf. S.Fr.378, Arist.Oec.1350b23, etc.; “κ. ἐκκοπεύς” Gal.10.445; νόμισμα κ. dub. sens. in Numen. ap. Eus.PE11.18; sunk, “γράψαι εἰς σανίδα κοῖλα γράμματα” SIG1011.15 (Chalcedon, iii/ii B.C.), cf. Longin.Rh.p.199 H. (but κ. γραμμή curved line, Hero Bel.75.15); ἀλέαν εἰς τὸ θύρωμα κοίλαν curved canopy, Rev.Arch.22.63 (Callatis, iii B.C.); κ. ὑποδήματα boots that reach to mid-leg, Ael.NA6.23 (“κοῖλα ποσσὶν ὑποδέδεσθε” Ezek.Exag.181, cf. Poll.7.84); κ. δέμνια empty bed, S.Tr.901; κ. χείρ, of a beggar, AP12.212 (Strat.); “κ. ἱστίον” Poll.1.107; κοῖλος μήν short month, Gem.8.3, cf. “κοιλοποιέομαι, κοῖλος” 11.3: Comp., -“ότερος ὁλμοῦ” Epich.81.
2. of Places, lying in a hollow or forming a hollow, κ. Λακεδαίμων the vale of L., Od.4.1; “κ. Θεσσαλίη” Hdt.7.129; “κ. Ἄργος” S.OC378, 1387; “Αὐλίδος κ. μυχοί” E. IA1600; “κ. τόποι” Plb.3.18.10: as pr.n., K. Συρία the district between Lebanon and Anti Lebanon, Id.1.3.1, etc.; τὰ K. “τῆς Εὐβοίης” Hdt. 8.13; ἡ K. the valley of the Ilissus, name of Attic deme, Id.6.103, etc.: Comp., “κοιλότερα τῆς κάτωθεν χώρας” Arist.Mete.352b33.
b. κ. λιμήν harbour lying between high cliffs, Od.10.92; κ. αἰγιαλός embayed beach, 22.385; “ἐν τῷ κ. καὶ μυχῷ τοῦ λιμένος” Th.7.52.
d. κ. ποταμός a river nearly empty of water, Th.7.84; “τοῦ ποταμοῦ κοίλου ῥυέντος” Socr. ap. Ath.9.388a; but κ. ποταμός with deep bed, Plb.21.37.4.
4. κ. νοσήματα internal complaints, Philostr. VA3.44.
II. metaph.,
1. of the voice, hollow, κόχλον ἑλὼν μυκήσατο “κοῖλον” Theoc.22.75 (though here κοῖλον may agree with κόχλον)“; φθέγγεσθαι κ. καὶ βαρύ” Luc.Ner.6, Philostr.VA3.38; “ὁ -ότατος τῶν φθόγγων” Aristid.Quint.1.10.
2. Philos., hollow, empty, void of content, αἱ κ. ἐνέργειαι, opp. αἱ ἀμείνους, Herm.in Phdr.p.170A.: more freq.in Comp., κοιλοτέρα θεωρία, ζωή, ib.pp.67,68A.; τὰ -ότερα, opp. τὰ ὑπέρτερα, ib.p.143 A., cf. Dam.Pr.96; χωρῶν πρὸς τὸ κ. ib. 379.
3. ἡμέραν κ. ποιεῖσθαι allow payments to lapse for a day (cf. “κοιλαίνω” 11.2), BGU1136.5 (i B.C.); οὐδεμίαν δόσιν κ. ποιεῖσθαι ib. 1146.15 (i B.C.).
III. concave, τὸ κ., opp. τὸ κυρτόν, Arist.Ph. 222b3, EN1102a31; “κοῖλα καὶ ἐσέχοντα” Philostr.Im.2.20; of military formations, Ascl.Tact.11.1.
IV. Subst. κοῖλον, τό, hollow, cavity, Pl.Phd.109b, al.; esp. of cavities in the body, “τὰ κ. γαστρός” E.Ph.1411; τὰ κ. [τῆς καρδίας] the ventricles, Arist.HA496a13; τὸ κ. τῶν νεφρῶν ib.497a11; “τὸ τῶν χειρῶν κ.” Apollod. ap. Ath. 11.479a; “τὸ κ. τοῦ . . ποδός” Hp.Epid.5.48: prov., τὸ κ. τοῦ ποδὸς δεῖξαι to show 'a clean pair of heels', Hsch.; τὰ κ. τῶν ὀφθαλμῶν, τοῦ προσώπου, Hp.Mul.2.119, Nat.Mul.9 codd. (sed leg. κύλα); τὰ κ. alone, hollows of the side, flanks, like κενεών, Arist.HA630a3.