Unusual Maori girl's name (5)
I believe the answer is:
moira
'girl's name' is the definition.
'unusual maori' is the wordplay.
'unusual' indicates anagramming the letters.
'maori' anagrammed gives 'MOIRA'.
(Other definitions for moira that I've seen before include "- - Shearer, actress-ballerina" , "-- Shearer, ballet dancer" , "Shearer perhaps" , "Girl" , "Shearer, possibly" .)