From Longman Dictionary of Contemporary Englishblack marketeerˌblack marketˈeer noun [countable] SCCBsomeone who sells things on the black market
Examples from the Corpus
black marketeer• For Kurzlinger, until then just a Berlin black marketeer and gangster, it became a profession.From Longman Business Dictionaryblack marketeerˌblack marketˈeer someone who illegally sells goods that are usually impossible to get in a particular place, or who sells foreign currency at an unofficial rateThe authorities started rationing gasoline last week, and black marketeers were very active. —black-marketeering noun [uncountable]drug trafficking, prostitution and black marketeering → marketeer 