ἀρκτήριον

From LSJ

ἐὰν ταῖς γλώσσαις τῶν ἀνθρώπων λαλῶ καὶ τῶν ἀγγέλων, ἀγάπην δὲ μὴ ἔχω, γέγονα χαλκὸς ἠχῶν ἢ κύμβαλον ἀλαλάζον → though I speak with the tongues of men and of angels and have not charity I am become as sounding brass or a tinkling cymbal

Source

Russian (Dvoretsky)

ἀρκτήριον: τό предполож. предохранительное средство, защита (ἀρκτήρια τύχης Eur.).