Look to get popular cut of meat (4)
I believe the answer is:
loin
'cut of meat' is the definition.
(loin is a kind of cut of meat)
'look to get popular' is the wordplay.
'look' becomes 'lo'.
'to get' means one lot of letters go next to another.
'popular' becomes 'in'.
'lo'+'in'='LOIN'
(Other definitions for loin that I've seen before include "Cut of meat from the lower back and sides" , "flesh!" , "Part of a carcase" , "Beef cut" , "Cut of meat from between the ribs and rump" .)