Sunday meal? (5)
I believe the answer is:
roast
'sunday meal' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for roast that I've seen before include "Heat strongly - criticise excessively" , "Carpet" , "Have a go at" , "Cook with dry heat" , "& 3 Accompaniment to Yorkshire pudding?" .)