ax to grind (9)
I believe the answer is:
grievance
(Other definitions for grievance that I've seen before include "Reason for dissatisfaction" , "gripe" , "Complaint" , "Item causing resentment" , "beef" .)
I believe the answer is:
grievance
(Other definitions for grievance that I've seen before include "Reason for dissatisfaction" , "gripe" , "Complaint" , "Item causing resentment" , "beef" .)