Fiji neighbor (5)
I believe the answer is:
tonga
'fiji neighbor' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for tonga that I've seen before include "Relatively small" , "South Pacific kingdom, capital Nuku'alofa" , "Two-wheeled Indian vehicle" , "Pacific Ocean monarchy" , "group of Pacific islands" .)