κατάγειος · katageios — LSJ
under the earth, subterranean, below ground
under the earth, subterranean, θησαυρός Hdt. 2.150; οἰκήματα Id. 3.97, etc.; οἰκίαι X. An. 4.5.25; οἴκησις Pl. R. 514a, Prt. 320e; ἐκ τοῦ κ. from below ground, Id. R. 532b; οἰκίσκος κ. v.l. in Paul.Aeg. 6.21.
II on the ground, ground-floor
on the ground, τὰ κ. ground-floor rooms, opp. ὑπερῷα, D.H. 10.32; στρουθοὶ κ. ostriches, Hdt. 4.175, 192; cf. κατώγειος.
2 cellar
Subst., κατάγειον or κατάγαιον, τό, cellar, POxy. 75.19 (ii A.D.), etc.