Get charge after importing drug (4)
I believe the answer is:
reap
'get' is the definition.
(I know that reap is a more specific form of the action derive)
'charge after importing drug' is the wordplay.
I cannot really understand how this works, but
'drug' could be 'e' (E is another name for ecstasy) and 'e' is found within the answer.
'charge' could be 'rap' (both can mean blame or responsibility) and 'rap' is located in the remaining letters.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for reap that I've seen before include "Gather 23dn" , "Cut or gather (a harvest)" , "Derive as a reward" , "Use a scythe" , "''As you sow, so you . . . .'' (4)" .)