κατά-στρωμα · kata-strōma — LSJ
that which is spread upon, over, deck
that which is spread upon or over: in a ship, deck, Hdt. 8.118, 119, Th. 1.49, X. HG 1.4.18, Pl. La. 184a, Thphr. Char. 22.5, etc.; καταστρώματα διὰ πάσης [τῆς νεώς] Th. 1.14; οἱ ἀπὸ τῶν κ., i.e. the fighting men, opp. the rowers, Id. 7.40.
II
part of the constellation Argo, Hipparch. 1.8.1, Ptol. Alm. 8.1.
III roof
πλίνθινα κ. a tile roof, AB 269, cf. LW 3.141 (Ephesus).
IV floor, pavement
floor, pavement, Ath.Mech. 13.4, Gp. 6.2.10.