Sunday dinner, perhaps right next to oven (5)
I believe the answer is:
roast
'sunday dinner' is the definition.
(a roast dinner is often eaten on Sunday)
'right next to oven' is the wordplay.
'right' becomes 'r' (common abbreviation).
'next to' says to put letters next to each other.
'oven' becomes 'oast' (type of kiln).
'r'+'oast'='ROAST'
'perhaps' is the link.
(Other definitions for roast that I've seen before include "Cooked like chestnuts tonight" , "Sunday tradition" , "open-air party in US" , "Cook, eg, joint of meat" , "Oven-cooked joint" .)