State at last behind Oriental (7)
I believe the answer is:
eastern
'oriental' is the definition.
(similar in meaning)
'state at last behind' is the wordplay.
'at last' says to take the final letters.
'behind' becomes 'astern' (at the back or behind of a ship).
The last letter of 'state' is 'e'.
'e'+'astern'='EASTERN'
(Other definitions for eastern that I've seen before include "Possibly Japanese" , "from afar" , "Earnest (anag.)" , "Indian perhaps" , "in Beijing, possibly" .)