Strong's G3573 — νυστάζω (verb)
nustazo (noos-tad'-zo) v.
1. to nod
2. (by implication) to fall asleep
3. (figuratively) to delay
[from a presumed derivative of G3506]
KJV: slumber 
Root(s): G3506 
Hebrew root: νεύω
Occurrences: 2