κενόν

From LSJ

ἀκίνδυνοι δ' ἀρεταὶ οὔτε παρ' ἀνδράσιν οὔτ' ἐν ναυσὶ κοίλαις τίμιαι → but excellence without danger is honored neither among men nor in hollow ships

Source

Russian (Dvoretsky)

κενόν: τό пустота, пустое пространство Arst.