Loaf end (4)
I believe the answer is:
heel
'loaf end' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for heel that I've seen before include "scumbag" , "Call to dog" , "One of the crusty ends of a loaf" , "3's weak point" , "Lean - back of foot" .)