narcotics
From Longman Dictionary of Contemporary Englishnarcoticsnarcotics[plural] especially American EnglishMDD strong illegal drugs such as heroin or cocaine the narcotics tradenarcotics agent (=a police officer who deals with the problems of narcotics) → narcoticExamples from the Corpusnarcotics agent• Such figures cause narcotics agents to wring their hands.• Many of its narcotics agents may well be assisting the drug cartels and their hit squads.