Mostly raw meat (5)
I believe the answer is:
brawn
This might be a double definition.
'mostly raw' is the first definition.
Although both the answer and definition are singular nouns, I cannot see how one could define the other.
'meat' is the second definition.
(I've seen this before)
Can you help me to learn more?
(Other definitions for brawn that I've seen before include "Beefiness" , "perhaps, a sandwich filling" , "Muscularity" , "Beefy strength" , "Muscular strength" .)