Composer drops in for a bit of pork (4)
I believe the answer is:
chop
'composer' is the definition.
Although both the answer and definition are singular nouns, I don't understand how one could define the other.
'drops in for a bit of pork' is the wordplay.
'drops in for' becomes 'cho' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'a bit of' says to take the initial letters.
The initial letter of 'pork' is 'p'.
'cho'+'p'='CHOP'
Can you help me to learn more?
(Other definitions for chop that I've seen before include "Cutlet" , "Reduce drastically" , "Thick slice of meat, often with rib" , "Use a cleaver" , "Cut by blow of axe" .)