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Synonyms
su·per·high·way (sōṓpər-hī́wā́)

noun 

  1. A broad highway, often with six or more lanes, used for high-speed traffic.
  2. See expressway
ex·press·way (ĭk-sprĕśwā́)

noun 

A major divided highway designed for high-speed travel, having few or no intersections. Also called freeway, limited access highway, superhighway, thruway