federal

any federal law-enforcement officer

being of or having to do with the northern United States and those loyal to the Union during the American Civil War

a member of the Union Army during the American Civil War

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”

national; especially in reference to the government of the United States as distinct from that of its member units

“federal courts”

of or relating to the central government of a federation

“a federal district is one set aside as the seat of the national government”