Land in eastern nation (6)
I believe the answer is:
estate
'land' is the definition.
(synonyms)
'eastern nation' is the wordplay.
'eastern' becomes 'e'.
'nation' becomes 'state' (synonyms).
'e'+'state'='ESTATE'
'in' acts as a link.
(Other definitions for estate that I've seen before include "Property - may go with rank" , "Everything one owns -- tea set (anag)" , "The entire property of a deceased person" , "Car with big luggage area" , "(see 1)" .)