1. An unlicensed dealer in illegal drugs
   - pusher, drug peddler, peddler [N. Amer], drug dealer, drug trafficker, pedlar [Brit, Cdn] 
2. A lawman concerned with narcotics violations
   - narc [N. Amer], nark, narcotics agent

Derived forms: narcos

Type of: criminal, crook, dealer, felon, law officer, lawman, malefactor, outlaw, peace officer

Encyclopedia: Narco

• causally
• causation
• causative
• cause
• cause célèbre
• cause of action
• cause of death
• cause to be perceived
• cause to sleep
• causeless
• causer
• causerie
• causeway
• causey
• causing
• caustic
• caustic lime
• caustic potash
• caustic remark
• caustic soda
• caustically
• cauterant
• cauterisation
• cauterise
• cauterization