עֲבוּר

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

English (Strong)

or rabur; passive participle of עָבַר; properly, crossed, i.e. (abstractly) transit; used only adverbially, on account of, in order that: because of, for (...'s sake), (intent) that, to.
the same as עֲבוּר; passed, i.e. kept over; used only of stored grain: old corn.