1. Proper noun.  A 64-mile Interstate freeway surrounding Washington, D.C..
  2. Proper noun.  (context, mostly local usage) Certain expressways that surround cities.
  3. Proper noun.  (US, politics) The US federal government and policy and lobbying organizations, located in Washington, D.C..
  4. Proper noun.  (rfv-sense) Washington D.C..
  5. Adjective.  Of or relating to the culture of Washington, D.C.; politicized.
  6. Noun.  (US) A freeway that encircles a city.

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This entry was last updated on RefTopia from its source on 3/20/2012.