Illegal drug (7)
(Other definitions for cocaine that I've seen before include "snow" , "Addictive narcotic" , "Addictive drug of oceanic kind" , "Oceanic (anag) - drug" , "Strange oceanic narcotic" .)
(Other definitions for narcotic that I've seen before include "Number" , "Drug producing torpor" , "drug supplied" , "Drug producing numbness and stupor" , "Sedative" .)