The meaning of "have a row with someone" is:
The definition of "have a row with someone" is:
(verb) to fight with someone
A: Why are you late for the party?
B: I had a row with my parents! They wouldn’t let me take the car!
A: That’s terrible!
I’m having a row with my landlord because he refuses to fix my broken toilet!
I had a row with my girlfriend last night. We’re always fighting!