ἀποκροτέω
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)
A snap the fingers, Str.14.5.9. II dash against the ground, χαμαί Babr.119.4.
German (Pape)
[Seite 309] ein Schnippchen schlagen, Strab. XIV p. 672.
Greek (Liddell-Scott)
ἀποκροτέω: ποιῶ κρότον διὰ τῶν δακτύλων (τοῦ μέσου καὶ τοῦ μεγάλου), ὡς ποιοῦσι καὶ νῦν οἱ ὀρχούμενοι, Στράβ. 672.