bagman
n. a drug dealer.Sam was a bagman for a well-known dealer for a while.We don't just want the bagman. We want to arrest Mr. Big.
carrier
n. a narcotics seller or transporter.The carrier has the most dangerous job of all.You'll never see an old carrier.
drug lord
n. a drug dealer high up in the distribution chain.The drug lords like Mr. Big seem never to get arrested.Max had always admired the sheer power of the domestic drug lord.
man and the man
n. a drug seller or pusher.The man won't give you credit, you numskull!When your man doesn't show, there's always a good reason.