beltway

(beltwā′)

noun

an expressway passing around an urban area

See beltway in American Heritage Dictionary 4

noun
A high-speed highway that encircles or skirts an urban area. Also called belt highway.

noun
  1. The beltway surrounding Washington, D.C.
  2. The political establishment of Washington, D.C., including federal officeholders, lobbyists, consultants, and media commentators.

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