Brontë's "Jane __" (4)
I believe the answer is:
'bronte's jane' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for eyre that I've seen before include "See 8" , "Jane . . . ., . . . . Square" , "Bronte heroine ` `Jane ....' '" , "lake, down under" , "SECOND PART OF 20" .)