Land in the west at eventide (6)
I believe the answer is:
estate
'land' is the definition.
(synonyms)
'in the west at eventide' is the wordplay.
'in' indicates a hidden word.
'ESTATE' can be found hidden inside 'west at eventide'.
(Other definitions for estate that I've seen before include "House and grounds" , "Extensive landed property (6)" , "Property left at death" , "All that one owns at death" , "Car with a rear door" .)