Two points on a beard (3)
I believe the answer is:
awn
'beard' is the definition.
(both can mean a growth on plants)
'two points on a' is the wordplay.
'two points' can mean two replacements for 'point'.
'point' becomes 'W' (West).
'point' becomes 'n' (North).
'on' is a charade indicator (letters next to each other).
'w'+'n'='wn'
'wn' after 'a' is 'AWN'.
(Other definitions for awn that I've seen before include "Bristle on, eg, barley" , "Bristle on grass spikelet" , "Grass "beard"" , "Bristle in flowering part of some grasses" , "Bristle growing on barley" .)