Some Italians live on this incline (4)

I believe the answer is:

heel

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

'this incline' is the definition.
(thesaurus)

I don't understand the remainder of the clue.

(Other definitions for heel that I've seen before include "instruction to follow" , "Achilles' weak spot" , "order to dog" , "As a dog, obey" , "Lean over; part of foot" .)

I've seen this clue in The Telegraph.

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