Moan about land (4)
I believe the answer is:
oman
'land' is the definition.
(I know that Oman is a Asian country)
'moan about' is the wordplay.
'about' indicates anagramming the letters.
'moan' is an anagram of 'OMAN'.
(Other definitions for oman that I've seen before include "Sultanate in southwest Asia" , "Sultanate on the south-east coast of the Arabian Peninsula" , "Former Gulf country, Muscat and --" , "Muscat's country" , "Middle Eastern country" .)