Hornsignal

From LSJ

τὸν ἀφ' ἱερᾶς 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

German > Latin

Hornsignal, cornūs oder bucĭnae signum (s. »Horn« über cornu u. buc.). – Plur. cornuum od. bucinarum signa. – ein H. geben, cornu od. bucinā signum dare: die Hornsignale ertönten, cornicines od. bucinatores canere inceptabant.