ἀποφθεγκτήριον
From LSJ
Κύριε, βοήθησον τὸν δοῦλον σου Νῖλον κτλ. → Lord, help your slave Nilos ... (mosaic inscription from 4th-cent. church in the Negev)
English (LSJ)
τό, A an utterance, Man.4.550.
Greek (Liddell-Scott)
ἀποφθεγκτήριον: τὸ, ἔκφρασις, ἐκφώνησις, Μανέθ. 4. 550.