A.hollow, “δρυός” Ps.-Phoc. 173, cf. Thphr. Fr.169; in a wall, LXXLe.14.37; in a rock, Str.12.3.11; deep valley, Pl.Epigr.5.6, LXXGe.14.8, al., BGU995 iii 4 (ii B.C.), SIG827 iii 11 (Delph., ii A.D.), Plb.5.44.7, D.S.3.15.
κοιλ-άς , άδος, ἡ, Subst.,