Meat stewed in ovens (7)
I believe the answer is:
venison
'meat' is the definition.
(venison is a kind of meat)
'stewed in ovens' is the wordplay.
'stewed' is an anagram indicator.
'in'+'ovens'='inovens'
'inovens' with letters rearranged gives 'VENISON'.
(Other definitions for venison that I've seen before include "Game" , "Meat - in ovens (anag)" , "Type of meat" , "Deer meat" , "Flesh of deer" .)