πλύσις
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)
[ῠ], εως, ἡ,
A washing, Pl.R.429e, Str.10.1.6, Dsc.5.153, etc.
German (Pape)
[Seite 639] ἡ, das Waschen, Reinigen, Plat. Rep. IV, 429 e u. Sp., wie Plut.