Country, capital Muscat (4)
I believe the answer is:
oman
I believe this is a double definition.
'country' is the first definition.
(I know that Oman is a Asian country)
'capital muscat' is the second definition.
(I know that Oman has the capital city Muscat)
(Other definitions for oman that I've seen before include "Gulf sultanate" , "Land" , "Gulf state" , "Arab state" , "Arabian peninsula country" .)