In China, Uruguay and a Pacific island (5)
I believe the answer is:
nauru
'a pacific island' is the definition.
(I've seen this before)
'in china uruguay and' is the wordplay.
'in' indicates the answer is hidden within the clue.
'NAURU' can be found hidden inside 'china uruguay and'.
(Other definitions for nauru that I've seen before include "Fairground carousel" , "Smallest Pacific state" , "Pacific coral island republic, once rich in phosphates" , "[OCEANIA] location" , "little nation" .)