Point north perhaps (5)
I believe the answer is:
thorn
'point' is the definition.
(I have seen 'Point of plant' mean 'thorn' so perhaps 'point' could also mean 'thorn')
'north perhaps' is the wordplay.
'perhaps' indicates anagramming the letters.
'north' anagrammed gives 'THORN'.
(Other definitions for thorn that I've seen before include "Sharp spike on a plant" , "Spiny bush" , "Sharp point on plant" , "A vegetable spike" , "North (anag) -- point" .)