Strong's G2837 — κοιμάω (verb)
koimao (koy-mah'-o) v.
1. to put to sleep
2. (passively or reflexively) to slumber
3. (figuratively) to decease
[from G2749]
KJV: (be a-, fall a-, fall on) sleep, be dead 
Root(s): G2749 
Hebrew root: κεῖμαι
Occurrences: 18