superhighway

2 ENTRIES FOUND:

su·per·high·way

noun \ˌsü-pər-ˈhī-ˌwā, ˈsü-pər-ˌ\

: a large and wide highway used for traveling at high speeds over long distances

Full Definition of SUPERHIGHWAY

1
:  a multilane highway (as an expressway or turnpike) designed for high-speed traffic

First Known Use of SUPERHIGHWAY

1925

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