Brawn; meat (4)
I believe the answer is:
beef
This clue is a double definition.
'brawn' is the first definition.
(I've seen this before)
'meat' is the second definition.
(beef is a kind of meat)
(Other definitions for beef that I've seen before include "Brawn; grumble" , "Muscle; meat; grievance" , "it's unacceptable for vegetarian" , "Grumble - muscle" , "Bovine flesh" .)