Romania, a little country (4)
I believe the answer is:
oman
'country' is the definition.
(Oman is an example)
'romania a little' is the wordplay.
'a little' says the answer is hidden in the clue.
'OMAN' is hidden in the letters of 'romania'.
(Other definitions for oman that I've seen before include "monarchy" , "Former Gulf country, Muscat and --" , "Muscat's country" , "Arab state" , "Sultanate on the south-east coast of the Arabian Peninsula" .)