Complaint about meat? (4)
I believe the answer is:
beef
I believe this is a double definition.
'complaint' is the first definition.
(beef can mean a complaint or objection)
'meat?' is the second definition.
(beef is a kind of meat)
'about' acts as a link.
(Other definitions for beef that I've seen before include "Complaint; muscle" , "Meat - complaint" , "Complaint; strength" , "Grouse - meat" , "Meat of the cow" .)