Part of NNW (4)
I believe the answer is:
west
'part of nnw' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for west that I've seen before include "Colombian with brews (anag)" , "One Direction" , "'Go ___ , young man'" , "Occident" , "Mae -, US actress; W" .)