Sunset site (4)
I believe the answer is:
west
'sunset site' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for west that I've seen before include "Occident" , "The cardinal compass point of 270 degrees" , "Colombian with brews (anag)" , "Dog (from Argyll?)" , "English county" .)