Strong's G3458 — μύλος (noun)
mulos (moo'-los) n.
1. a "mill"
2. (by implication), a grinder (millstone)
[probably ultimately from the base of G3433 (through the idea of hardship)]
KJV: millstone 
Root(s): G3433 
Hebrew root: μόλις
Occurrences: 5