Big sister? (6)

I believe the answer is:

abbess

'big sister?' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for abbess that I've seen before include "She heads a religious community" , "Superior nun" , "one with unmarried sisters in her care" , "Head of group of nuns" , "Superior of group of nuns" .)

I've seen this clue in The Sun.

Want a hint initially instead of a full solution? Install my app