Retired judge providing island country (4)
I believe the answer is:
fiji
'country' is the definition.
(Fiji is an example)
'retired judge providing island' is the wordplay.
'retired' says the letters should be written backwards.
'judge' becomes 'J' (abbreviation for judge).
'providing' becomes 'if' (eg 'providing it's sunny' means 'if it's sunny').
'island' becomes 'i' (geographical abbreviation).
'j'+'if'='jif'
'jif' written backwards gives 'fij'.
'fij'+'i'='FIJI'
(Other definitions for fiji that I've seen before include "Pacific island republic" , "Pacific member of the British Commonwealth" , "South Pacific republic of 844 islands" , "South Pacific member of the Commonwealth" , "Country of many islands" .)