στεγαστήρ
From LSJ
Ῥῦσέ με δεινῶν νοσημάτων, ἱερώτατε, ἱερωσύνην συναρμόσας ἐν χαρᾷ και ἐπιστήμης τὸ πολύτιμον κεφάλαιον → Deliver me from grievous afflictions, most holy one, joining sanctity together in joy with the precious fountainhead of knowledge
English (LSJ)
ῆρος, ὁ,
A coverer: hence, tile, Hsch. s.v. σωλῆνες; κέραμος σ. Poll.7.124, 10.182; ὁ σ. ὄροφος ib.172. II = τὸ θριωτὸν (θρίωπον cod.) ἕψημα, Hsch.