/ ˈherəʊɪn; NAmE -roʊ-/ noun
1.
a girl or woman who is admired by many for doing sth brave or good :
the heroines of the revolution
2.
the main female character in a story, novel, film / movie, etc. :
The heroine is played by Demi Moore.
3.
a woman that you admire because of a particular quality or skill that she has :
Madonna was her teenage heroine.
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WORD ORIGIN
mid 17th cent. (in the sense demigoddess, venerated woman ): from French héroïne or Latin heroina , from Greek hērōinē , feminine of hērōs hero.