One of New Zealand's official languages (5)
I believe the answer is:
maori
'one of new zealand's official languages' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for maori that I've seen before include "One of New Zealand's aboriginal people" , "Indigenous New Zealanders" , "Native Kiwi" , "NZ people" , "Polynesian aborigine" .)