The right oven for the joint (5)
I believe the answer is:
roast
'the joint' is the definition.
('roast' can be a synonym of 'joint')
'the right oven' is the wordplay.
'the right' becomes 'r' (common abbreviation).
'oven' becomes 'oast' (type of kiln).
'r'+'oast'='ROAST'
'for' acts as a link.
(Other definitions for roast that I've seen before include "Carpet" , "Cook with dry heat" , "Tear to pieces" , "Heat strongly - criticise excessively" , "Oven joint" .)