Piece of meat that's shared (5)
I believe the answer is:
joint
I believe this clue is a double definition.
'piece of meat' is the first definition.
'shared' is the second definition.
(associated in meaning)
'that's' is the link.
(Other definitions for joint that I've seen before include "Hip, e.g." , "Piece of meat - illegal smoke" , "Eg, elbow or ankle" , "Bone junction" , "Knee or elbow?" .)