Call for superior judgment (6)
I believe the answer is:
appeal
'call for' is the definition.
(appealing is a kind of calling for)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for appeal that I've seen before include "Contest a verdict" , "Bring verdict for review by higher court" , "Beg" , "Howzat!" , "Legal procedure" .)