Wicked Witch of the ___ (4)

I believe the answer is:
west
(Other definitions for west that I've seen before include "Colombian with brews (anag)" , "'Go ___ , young man'" , "Mae -, US actress; W" , "Dog (from Argyll?)" , "Small white dog" .)
I believe the answer is:
west
(Other definitions for west that I've seen before include "Colombian with brews (anag)" , "'Go ___ , young man'" , "Mae -, US actress; W" , "Dog (from Argyll?)" , "Small white dog" .)