The woman's love champion (4)
I believe the answer is:
hero
'champion' is the definition.
('hero' can be a synonym of 'champion')
'the woman's love' is the wordplay.
'the woman' becomes 'her' (**).
'love' becomes 'o' (In tennis, 'love' means 'zero').
'her'+'o'='HERO'
(Other definitions for hero that I've seen before include "paragon" , "Exceptionally brave person" , "One looked up" , "One shows exceptional courage" , "girl a ring" .)