He has a right to the woman! (3)
I believe the answer is:
her
'the woman' is the definition.
'he has a right' is the wordplay.
'has' says to put letters next to each other.
'a right' becomes 'r' (common abbreviation).
'he'+'r'='HER'
'to' is the link.
(Other definitions for her that I've seen before include "That lady's" , "Belonging to the woman" , "Belonging to a female" , "The female's" , "Pronoun used of ship" .)