Chopped meat Charlie dumped in pit (5)
I believe the answer is:
mince
'chopped meat' is the definition.
(I've seen this before)
'charlie dumped in pit' is the wordplay.
'charlie' becomes 'c' (phonetic alphabet: alpha, bravo, charlie etc.).
'dumped in' means one lot of letters goes inside another.
'pit' becomes 'mine' (I've seen this before).
'c' going within 'mine' is 'MINCE'.
(Other definitions for mince that I've seen before include "Cut fine" , "Dice" , "getting chop" , "Shred (meat)" , "Shredded beef" .)