Had dinner with newspaper boss after row (5)
I believe the answer is:
dined
'had dinner' is the definition.
('dine' can be a synonym of 'have dinner')
'newspaper boss after row' is the wordplay.
'newspaper boss' becomes 'ed' (short for editor).
'after' says to put letters next to each other.
'row' becomes 'din' (both can mean a loud disturbance).
'ed' put after 'din' is 'DINED'.
'with' is the link.
(Other definitions for dined that I've seen before include "Had supper" , "Ate a meal" .)