Old buccaneer ignoring right drug (6)
I believe the answer is:
opiate
'drug' is the definition.
(opiate is a kind of drug)
'old buccaneer ignoring right' is the wordplay.
I cannot quite understand how this works, but
'old' could be 'o' (abbreviation) and 'o' is located in the answer.
'buccaneer' could be 'i' (where the crossword setter is 'Buccaneer') and 'i' is found within the answer.
The remaining letters 'pate' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for opiate that I've seen before include "Drug with an opium base" , "of heroin, perhaps" , "Drug from poppies" , "Does it ease pain" , "Narcotic drug" .)