From Longman Dictionary of Contemporary Englishfederal/US marshalfederal/US marshalAmerican EnglishSCT a police officer employed by the national government to make sure people do what a court order says they must do → marshal
Examples from the Corpus
federal/US marshal• Arnold Schwarzenegger undergoes more perils as a federal marshal who erases the pasts of government informers and relocates them.• Bottles, bricks and rocks were hurtling toward the federal marshals surrounding the campus administration building.• Governor Ross Barnett of Mississippi did not want federal marshals to displace his authority. 