κοίμησις
From LSJ
Ἔοικα γοῦν τούτου γε σμικρῷ τινι αὐτῷ τούτῳ σοφώτερος εἶναι, ὅτι ἃ μὴ οἶδα οὐδὲ οἴομαι εἰδέναι → I seem, then, in just this little thing to be wiser than this man at any rate, that what I do not know I do not think I know either
English (LSJ)
εως, ἡ,
A lying down to sleep, κοιμήσεις ἐπὶ θύραις Pl.Smp.183a; ἡ κ. τοῦ ὕπνου Ev.Jo.11.13. II the sleep of death, LXX Si.46.19, 48.13, Tab.Defix.Aud.242.30 (Carthage, iii A.D.).
German (Pape)
[Seite 1467] ἡ, das Schlafen; Plat. Conv. 183 a im plur.; vom Todesschlafe, Sp.