Number of points about a woman (5)
I believe the answer is:
seven
'number' is the definition.
(seven is a kind of number)
'points about a woman' is the wordplay.
'points' becomes 'sn' (two compass points).
'about' means one lot of letters goes inside another.
'a woman' becomes 'eve' (Eve is an example).
'sn' enclosing 'eve' is 'SEVEN'.
'of' acts as a link.
(Other definitions for seven that I've seen before include "Numeral" , "Number of colours of the rainbow" , "Film" , "Number of sisters in Sussex" , "So many ages of man (AYLI)" .)