What is the meaning of Federal?

noun

• A member of the Union Army during the American Civil War.
  • synonyms: Federal soldier, Union soldier
• Any federal law-enforcement officer.
  • synonyms: Fed, federal official

adjective

• National; especially in reference to the government of the United States as distinct from that of its member units.
  • usage: "the Federal Bureau of Investigation"; "federal courts"; "the federal highway program"; "federal property"
• Of or relating to the central government of a federation.
  • usage: "a federal district is one set aside as the seat of the national government"
• Being of or having to do with the northern United States and those loyal to the Union during the American Civil War.
  • usage: "Union soldiers"; "Federal forces"; "a Federal infantryman"
  • synonyms: Union
• Characterized by or constituting a form of government in which power is divided between one central and several regional authorities.
  • usage: "a federal system like that of the United States"; "federal governments often evolved out of confederations"