στεγαστρίς
From LSJ
πολλὰ δ' ἄναντα κάταντα πάραντά τε δόχμιά τ' ἦλθον → and ever upward, downward, sideward, and aslant they went
English (LSJ)
ίδος, ἡ,
A serving for waterproof covering. διφθέραι Hdt. 1.194. II as Subst., prob. roof, OGI109.4 (Antaeopolis, ii A.D.).
German (Pape)
[Seite 932] ίδος, ἡ, bedeckend, διφθέραι, Her. 1, 194.