αμφίδρυφος

From LSJ

τὸν ἀπὸ γραμμᾶς κινεῖν λίθον → move one's man from this line, move a piece from this line, try one's last chance, make a last ditch effort

Source

Greek Monolingual

ἀμφίδρυφος, -ον (Α)
ο αμφιδρυφής.
[ΕΤΥΜΟΛΟΓΙΑ < ἀμφι- + -δρυφος < αρχ. δρύτττω «σχίζω»].