Lean over part of foot (4)
I believe the answer is:
Here is my best explanation:
I believe this clue is a double definition.
'lean over' is the first definition.
'part of foot' is the second definition.
(I've seen this before)
(Other definitions for heel that I've seen before include "horrible person", "Keel over", "Part of shoe; bad person", "Dog training command", "secure ball", "Unpleasant type", "Crusty end of a loaf", "Back part of the foot", "Be inclined" and "Achilles's weak spot".)