Quarrel with boss to make this point (9)
I believe the answer is:
arrowhead
'this point' is the definition.
(arrowhead is a kind of point)
'quarrel with boss' is the wordplay.
'quarrel' becomes 'arrow' (I've seen this before).
'with' means one lot of letters go next to another.
'boss' becomes 'head' (synonyms).
'arrow'+'head'='ARROWHEAD'
'to make' is the link.
(Other definitions for arrowhead that I've seen before include "A suitable end for weapon" , "Tip of an old projectile" , "Water plant" , "Point to a weapon" .)