Strong's G3964 — πατραλῴας (noun)
patraloas (pat-ral-ow"'-as) n.
1. a patricide, father murderer
2. (literally) father-thresher
[from G3962 and the base of G257]
KJV: murderer of fathers 
Root(s): G3962, G257 
Compare: G3389 
Hebrew root: ἅλων
Occurrences: 1