Lexical Definition

‎κοιμάω‎ koimáō (koy-mah'-o) to sleep ^G:V
from ‎κεῖμαι‎

(be a-, fall a-, fall on) sleep, be dead.

• to put to sleep, i.e. (passively or reflexively) to slumber
• figuratively, to decease

Abbott-Smith

κοιμάω, -ῶ, [in LXX chiefly for שׁכב;]
to lull to sleep, put to sleep. Mid and pass., to fall asleep (M, Pr., 162; M, Th., 1, 4, 13): Mt 28:13, Lk 22:45, Jo 11:12, Ac 12:6. Metaph, of death: Mt 27:52, Jo 11:11 Ac 7:60 13:36, I Co 7:39 11:30 15:6, 18, 20, 51, I Th 4:13-15, II Pe 3:4 (cf. Is 14:8 43:17, II Mac 12:45).†
SYN.: καθεύδω.

Abbott-Smith References

Liddell-Scott-Jones

κοιμάω-άω,

future -ήσω, Doric dialect -άσω [ᾱ]: aorist ἐκοίμησα, Epic dialect κοίμησα [Refs 8th c.BC+]:—middle, future -ήσομαι [Refs 1st c.BC+]aorist κοιμάωήσατο, -αντο, [Refs 8th c.BC+]:—passive, future -ηθήσομαι [Refs 5th c.BC+]: aorist ἐκοιμάωήθην [Refs 8th c.BC+]: perfect κεκοίμημαι [Refs 4th c.BC+]:—lull, put to sleep, κοίμησον.. Ζηνὸς ὑπ᾽ ὀφρύσιν ὄσσε φαεινώ [κοιμάωήσατε νηλέϊ ὕπνῳ 8th c.BC: Odyssea Homerus Epicus “Odyssey” 12.372; βλέφαρα μὴ κοιμάωῶν ὕπνῳ 4th-5th c.BC: Aeschylus Tragicus “Septem contra Thebas” 3 ">Refs 8th c.BC+]; put to bed, τὸν δ᾽ αὐτοῦ κοίμησε [Refs 8th c.BC+]; of a hind, ἐν ξυλόχῳ.. νεβροὺς κοιμάωήσασα [Refs]

__2 metaphorically, still, calm, ἀνέμους, κύματα, [Refs 8th c.BC+]; also, soothe, assuage, κοίμησον δ᾽ ὀδύνας [Refs 8th c.BC+]; ᾧ (i.e. φύλλῳ) κοιμάωῶ τόδ᾽ ἕλκος [Refs 5th c.BC+]
__II middle and passive, fall asleep, go to bed, [Refs 8th c.BC+]; of animals, lie down, κατὰ ἤθεα κοιμάωηθῆναι [κοιμάω; 5th-6th c.BC: Xenophon Historicus “Hiero” 6.7 ">Refs 8th c.BC+]; βαθὺν κοιμάωηθῆναι (i.e. ὕπνον) [Refs 2nd c.AD+]
__II.2 metaphorically, ὅπως ἂν κοιμάωηθῇ [τὸ ἐπιθυμητικόν] [Refs 5th c.BC+]
__II.3 of the sleep of death, κοιμάωήσατο χάλκεον ὕπνον [Refs 8th c.BC+]: absolutely, fall asleep, die, [κοιμάωήθη μετὰ τῶν πατέρων LXX.3Ki.2.10, +others, compare “PFay.” 22.28 (1st c.AD), NT.Matt.27.52, NT.John.11.11, etc.; in epitaphs, “IG” 14.1683, etc.; κ. τὸν αἰώνιον ὕπνον [prev. work]929. ">NT+5th c.BC+]
__II.4 κοιμάωῶντο.. παρὰ μνηστῇς ἀλόχοισι [Refs 8th c.BC+]: hence, of sexual intercourse, lie with another, [κοιμάωηθεῖσα 8th-7th c.BC: Hesiodus Epicus “Theogonia” 213; παρά τινι 5th c.BC: Herodotus Historicus 3.68; σὺν δεσπόταισι 5th c.BC: Euripides Tragicus [same place]; μετά τινος 4th c.BC: Timocles Comicus 22.2; ἀπὸ γυναικὸς ἀνὴρ τὰν νύκτα κοιμάωαθές “Berl.Sitzb.” 1927.157 (from Cyrene). ">Refs 8th c.BC+]
__II.5 keep watch at night, [Refs 5th c.BC+]
__II.6 of things, remain during the night, οὐ μὴ κοιμάωηθήσεται ὁ μισθὸς παρά σοι ἕως πρωί [LXX]; ἡ κιβωτὸς ἐκοιμάωήθη ἐκεῖ[LXX]
__II.7 with accusative, dream of, μέταλλα χρύσεια [Refs 2nd c.AD+]

_{LSJ Scripture Refs: Matt.27.52 ☩ John.11.11 ☩ LXX.Lev.19.13 ☩ LXX.Josh.6.10}