Meaning of superhighway

su•per•high•way

Pronunciation: (s'pur-hī"wā, s"pur-hī'wā"), [key]
— n.
  1. a highway designed for travel at high speeds, having more than one lane for each direction of traffic, a safety strip dividing the two directions, and cloverleaves to route the traffic on and off the highway. Cf.
  2. any very fast route or course.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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