Opportunity to cut north, say, for point on top (6,4)
I believe the answer is:
widows peak
'point on top' is the definition.
'widow's peak' can be an answer for 'point' (widow's peak is a kind of point). I'm not sure about the 'on top' bit.
'opportunity to cut north say' is the wordplay.
I cannot really see how this works, but
'say' could be 'speak' (synonyms) and 'speak' is found in the answer.
The remaining letters 'widow' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
'for' acts as a link.
Can you help me to learn more?
(Other definitions for widows peak that I've seen before include "V-shaped hairline" , "Barnet v remaining" .)