Joint of meat (4)
I believe the answer is:
loin
'joint of meat' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for loin that I've seen before include "Lumbar region" , "Part of the back - cut of meat" , "Cut of meat from between rib and haunch" , "Part of body between ribs and hip-bone" , "Part of a carcase" .)