Extended Strong's Greek Lexicon (Abbott-Smith based)
to sleep
Usage: κοιμάω, -ῶ [in LXX chiefly for שָׁכַב ;] to lull to sleep, put to sleep. Mid and pass., to fall asleep (M, Pr., 162; M, Th., 1, 4, 13): Mat.28:13, Luk.22:45, Jhn.11:12, Act.12:6. Metaph, of death: Mat.27:52, Jhn.11:11 Act.7:60 13:36, 1Co.7:39 11:30 15:6 15:18 15:20 15:51, 1Th.4:13-15, 2Pe.3:4 (cf. Isa.14:8 43:17, 2Ma.12:45).† SYN.: καθεύδω (AS)