Strong's:κοίμησις sleeping, i.e. (by implication) reposeDerivation: from G2837;KJV Usage: taking of rest. G2837
TBESG:κοίμησιςsleepG:N-F κοίμησις, -εως, ἡ [in LXX: Refs Sir.46:19 48:13 * ;] a reclining, resting: Jhn.11:13.† (AS)
κοίμησις koimēsis koy'-may-sis From G2837; sleeping, that is, (by implication) reposeKJV Usage: taking of rest.
κοιμάω koimaō koy-mah'-o From G2749; to put to sleep, that is, (passively or reflexively) to slumber; figuratively to deceaseKJV Usage: (be a-, fall a-, fall on) sleep, be dead.