Admirable woman getting rid of last drug (6)
I believe the answer is:
heroin
'drug' is the definition.
(heroin is a kind of drug)
'admirable woman getting rid of last' is the wordplay.
I cannot really understand how this works, but
'woman' could be 'her' (her refers to a woman) and 'her' is located in the answer.
'of' could be 'o' and 'o' is found within the answer.
The remaining letters 'in' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for heroin that I've seen before include "Class A drug" , "Narcotic powder derived from morphine" , "Highly addictive illegal drug" , "Hard drug" , "Highly addictive narcotic" .)