A pass may finish the Maori follower (7)
I believe the answer is:
acolyte
'follower' is the definition.
(I've seen this before)
'a pass may finish the maori' is the wordplay.
'pass' becomes 'col' (col is a term for a mountain pass).
'finish' says to take the final letters.
'the maori' becomes 'te' (I've seen this in other clues).
The final letter of 'may' is 'y'.
'a'+'col'+'y'+'te'='ACOLYTE'
(Other definitions for acolyte that I've seen before include "Minister's assistant" , "Adherent or priest's assistant" , "Supporter" , "Priest's attendant" , "Person who assists a priest" .)