[soo-per-hahy-wey, soo-per-hahy-wey] 
| 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. Compare expressway. |
| 2. | any very fast route or course. |
| ex·press·way (ĭk-sprěs'wā') n. A major divided highway designed for high-speed travel, having few or no intersections. Also called freeway, limited access highway, superhighway, thruway. |
| su·per·high·way (sōō'pər-hī'wā') n.
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superhighway
information superhighway
superhighway
major arterial divided highway that features two or more traffic lanes in each direction, with opposing traffic separated by a median strip; elimination of grade crossings; controlled entries and exits; and advanced designs eliminating steep grades, sharp curves, and other hazards and inconveniences to driving. Frequently expressways have been constructed over completely new routes, passing near but not through large centres of population, on more or less direct lines between desired termini. Their advantages include high speed, greater safety, comfort and convenience for drivers and passengers, and lower vehicle operating costs. Many of these new express highways, especially in the United States, are toll roads, but that is an incidental, not an essential, feature.
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pərˌhaɪ