Meat can be a sin, put in the wrong oven (7)
I believe the answer is:
venison
'meat' is the definition.
(I know that venison is a game meat)
'can be a sin put in the wrong oven' is the wordplay.
'can be' is an anagram indicator.
'put in' indicates putting letters inside.
'the wrong' indicates anagramming the letters.
'sin' anagrammed gives 'nis'.
'oven' with letters rearranged gives 'veon'.
'nis' put within 'veon' is 'VENISON'.
(Other definitions for venison that I've seen before include "Flesh of deer" , "Deer meat" , "Meat - in ovens (anag)" , "Game" , "Deer (as food)" .)