Judean king (5)
I believe the answer is:
herod
'judean king' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for herod that I've seen before include "King of Judaea, temple builder" , "Old king" , "Former king" , "Roman king of Judaea" , "King of Judea who ordered the death of children under two in Bethlehem" .)