Domestic troubles can give you lines (4)
I believe the answer is:
rows
'lines' is the definition.
(row is a kind of line)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for rows that I've seen before include "Propels into quarrels?" , "Angry disputes" , "Banks" , "Arrangements side by side in lines" , "Quarrels; ranks" .)