προβόλαιον

From LSJ

Ἀναξαγόρας δύο ἔλεγε διδασκαλίας εἶναι θανάτου, τόν τε πρὸ τοῦ γενέσθαι χρόνον καὶ τὸν ὕπνονAnaxagoras used to say that we have two teachers for death: the time before we were born and sleep | Anaxagoras said that there are two rehearsals for death: the time before being born and sleep

Source

German (Pape)

[Seite 712] τό, = πρόβλημα, bes. vorgehaltene Waffe, Schild oder Speer, Orak. bei Her. 7, 148, wo die mss. τὸν προβ. haben.