Old buccaneers ignoring right drugs (7)
I believe the answer is:
opiates
'drugs' is the definition.
(opiate is a kind of drug)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for opiates that I've seen before include "Drugs that dull the feelings, sedatives" , "Poppy-derived drugs" , "Branch of narcotics" , "Sedative drugs" , "Narcotic drugs" .)