Narcotic
'narcotic' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for drug that I've seen before include "Pharmaceutical (or recreational) item" , "Maybe addictive substance" , "Medical or narcotic substance" , "Item of medicine or a narcotic" , "Perhaps an upper" .)
'narcotic' is the definition.
(I know that opiate is a type of narcotic)
This is the entire clue.
(Other definitions for opiate that I've seen before include "Poppy-based drug" , "A sedative drug" , "A sleep-inducing drug (6)" , "Sedating drug" , "A drug to induce sleep" .)
'narcotic' is the definition.
(heroin is a kind of narcotic)
This is the entire clue.
(Other definitions for heroin that I've seen before include "Narcotic powder derived from morphine" , "Addictive drug sold by pushers" , "Type of drug" , "Highly addictive morphine derivative" , "Highly addictive narcotic" .)