Cruel woman to continue without PR (6)

I believe the answer is:

ogress

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

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

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for ogress that I've seen before include "man-eater" , "Female giant of fairy tales" , "Female giant in fairytales" , "Female giant in fairy tale" , "Formidable woman" .)

I've seen this clue in The Sun.

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