Now, Vienna banishes the odd baker (4)
I believe the answer is:
oven
'baker' is the definition.
(I've seen this in another clue)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for oven that I've seen before include "Metal box in which to roast" , "Enclosed chamber for cooking" , "Kiln, perhaps" , "Liquid oxygen; salmon" , "Part of a cooker" .)