Is up on Latin prophetess (5)

I believe the answer is:

sibyl

I'm a little stuck... Click here to teach me more about this clue!

'prophetess' is the definition.
(I've seen this in another clue)

I cannot understand how the rest of the clue works.

(Other definitions for sibyl that I've seen before include "Greek prophetess" , "prophet" , "Female oracle" , "Charmer" , "Ancient Roman prophetess" .)

I've seen this clue in the Sydney Morning Herald.

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