courier

1 a person who imports or exports goods secretly and illegally under wartime rationing, the only way to obtain some foods was from a courier Synonyms bootlegger, contrabandist, smuggler, runnerRelated Words coyote, gunrunner, mule [slang]

2 one that carries a message or does an errand a courier just delivered a package for you Synonyms messenger, express [British], go-between, page, runnerRelated Words forerunner, harbinger, herald; agent, ambassador, delegate, deputy, emissary, envoy, representative; bearer, carrier, deliveryman, letter carrier, mail carrier, mailman