Girl raised fox (3)

I believe the answer is:

tod

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

'fox' is the definition.
(historic term)

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

(Other definitions for tod that I've seen before include "If you're on it, you're on your own" , "One's alone on this" , "Sly person" , "Fox" , "Former English weight for wool - dot it" .)

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

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