πιστήριον
From LSJ
ἔκβαλε πρῶτον ἐκ τοῦ ὀφθαλμοῦ σοῦ τὴν δοκόν, καὶ τότε διαβλέψεις ἐκβαλεῖν τὸ κάρφος ἐκ τοῦ ὀφθαλμοῦ τοῦ ἀδελφοῦ σου → first take the plank out of your own eye, and then you will see clearly to remove the speck from your brother's eye
English (LSJ)
τό,
A = ποτιστήριον, Hsch., Phot.
German (Pape)
[Seite 620] τό, = ποτιστήριον, Phot. lex.
Greek (Liddell-Scott)
πιστήριον: τό, = ποτιστήριον Φώτ.