θρηνήτρια
From LSJ
τὸ δ' ἐξαίφνης τὸ ἐν ἀναισθήτῳ χρόνῳ διὰ μικρότητα ἐκστάν → suddenly refers to what has departed from its former condition in a time imperceptible because of its smallness
English (LSJ)
ἡ, fem. of θρηνητήρ, Sch.E.Ph.1489.
German (Pape)
[Seite 1218] ἡ, das Klageweib, Sp.
Greek (Liddell-Scott)
θρηνήτρια: ἡ, θηλ. τοῦ θρηνητὴρ (ἴδε θρηνῳδός), Θεοφύλακτ.