στρωμάτιον
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)
τό, Dim. of στρῶμα,
A mattress or cushion, PCair.Zen.60.9, 241.3 (iii B.C.), al.: pl., bedclothes, M.Ant.5.1, POxy.1645.9 (iv A.D.).