(noun.) any federal law-enforcement officer.
(noun.) a member of the Union Army during the American Civil War.
(adj.) national; especially in reference to the government of the United States as distinct from that of its member units; 'the Federal Bureau of Investigation'; 'federal courts'; 'the federal highway program'; 'federal property' .
(adj.) characterized by or constituting a form of government in which power is divided between one central and several regional authorities; 'a federal system like that of the United States'; 'federal governments often evolved out of confederations' .
(adj.) of or relating to the central government of a federation; 'a federal district is one set aside as the seat of the national government' .
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