According to Paul Simon you can call ... for dinner? (4)
I believe the answer is:
meal
I believe this is a double definition.
'according to paul simon you can call' is the first definition.
(Call Me Al is a Paul Simon song)
'dinner?' is the second definition.
(dinner is a kind of meal)
'for' is the link.
(Other definitions for meal that I've seen before include "Repast" , "Food ground up" , "Coarsely ground grain" , "Grain ground to powder" , "Eg, dinner or tea" .)