πρωτόπλοος
From LSJ
Ἀναξαγόρας δύο ἔλεγε διδασκαλίας εἶναι θανάτου, τόν τε πρὸ τοῦ γενέσθαι χρόνον καὶ τὸν ὕπνον → Anaxagoras 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
English (LSJ)
ον, Att. contr. πρωτό-πλους, ουν,
A going to sea for the first time, νηῦς Od.8.35, cf. E.Hel.1531; π. πλάτα the first-plied oar (of the ship Argo), Id.Andr. 865 (lyr.), cf. S.E.M.9.32: metaph., π. νεότης just embarking on the sea of love, Pl.Epigr.30 (v.l. πρωτοπόρος). II sailing first or foremost, X.HG5.1.27: pr.n. of Athenian warship, H.E.K. Schmidt Die Namen der attischen Kriegsschiffe 7 (v B.C.).