Peevish complaint (6)
'peevish complaint' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for whinge that I've seen before include "Grumble persistently while hewing" , "Whine and grumble persistently" , "Complain fretfully" , "Moan" , "protest?" .)
(Other definitions for gripe that I've seen before include "Grumble (colloq.)" , "Complain; stomach pain" , "Grievance" , "Keep on complaining" , "Trivial complaint" .)