Is in possession of one drug or another (4)
I believe the answer is:
hash
'or another' is the definition.
I can't judge whether this defines the answer.
'is in possession of one drug' is the wordplay.
'is in possession of' becomes 'has' (I've seen this in another clue).
'one drug' becomes 'H' (H is an example).
'has'+'h'='HASH'
Can you help me to learn more?
(Other definitions for hash that I've seen before include "Error" , "Recooked dish for shah" , "Mess; reheated meal" , "A finely chopped mixture of meat and potatoes" , "Mess; meat/potato dish" .)