Lame sort of dinner, say (4)
I believe the answer is:
meal
'dinner say' is the definition.
(dinner is a kind of meal)
'lame sort' is the wordplay.
'sort' is an anagram indicator.
'lame' anagrammed gives 'MEAL'.
'of' acts as a link.
(Other definitions for meal that I've seen before include "Eg, dinner or tea" , "Breakfast, dinner or tea" , "Eg, breakfast" , "Ground grain or pulses" , "Lame (anag.)" .)