Pronunciation: (sOO'pur-hī"wā, sOO"pur-hī'wā"), [key]
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. expressway.
2. any very fast route or course.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.