Bronte heroine Jane (4)
I believe the answer is:
eyre
'bronte heroine jane' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for eyre that I've seen before include "An historic journey" , "Jane . . . ., . . . . Square" , "SECOND PART OF 20" , "C. Bronte's orphan Jane" , "See 17 Across" .)