Arabian country (5)
I believe the answer is:
yemen
'arabian country' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for yemen that I've seen before include "Arabian country, capital San'a" , "Country bordering Oman" , "Arabian country, capital Sanaa" , "Enemy (anag) - country of Arabia" , "Middle East country" .)