Cook in oven? (5)
I believe the answer is:
roast
'cook in oven?' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for roast that I've seen before include "Oven-cook, tease" , "Cook with dry heat" , "Cooked meat; criticise" , "Reprimand - cook" , "Sunday dinner" .)