A meaty trumpet piece (4)
I believe the answer is:
rump
'a meaty trumpet piece' is the definition.
'rump' can be an answer for 'piece' (rump is a kind of piece). I'm not certain of the 'a meaty trumpet' bit.
'meaty trumpet piece' is the wordplay.
'piece' indicates a hidden word.
'RUMP' can be found hidden inside 'meaty trumpet'.
Can you help me to learn more?
(Other definitions for rump that I've seen before include "Bottom - cut of steak" , "Seat" , "Type of steak" , "Rear; buttocks" , "Hind part; small remnant" .)