A.hollow, cavity, Arist.Spir.483b23, Mu.395b34 (pl.), Anon.Lond. 23.20 (pl.), Thphr.HP3.8.3 (pl.), Babr.86.1, Ruf.Onom.145; [τοῦ νώτου] PMag.Par.1.1846; “τὰ κ. τῶν νεφῶν” Epicur.Ep.2p.44U., cf. 1p.9U.
2. basin into which rivers discharge, Plb.4.39.2 (pl.), 8; bed of a torrent, Id.4.70.7: generally, of hollow places, low-lying land, LXX Ge.23.2, Agatharch.32; “κ. ἔμβροχον” BGU571.12 (ii A.D.); excavation, PPetr.2p.43 (pl., iii B.C.).
II. ulcer on the cornea, Gal.14.773, Aët.7.29.