(historical) A road that is higher than the surrounding land and has drainage ditches at the sides / A main public road, especially a multi-lane, high-speed thoroughfare.

To travel on a highway

plural of highway

Provided with highways.

(historical, literally) The act of robbing a traveler on a public road. / (idiomatic) Said of excessive or exorbitant prices.

The highest paved international road in the world, which connects China to Pakistan across the Karakoram mountain range, through the Khunjerab Pass, at an altitude of 4,693 metres (15,397 feet).

The official road safety manual for the United Kingdom, covering pedestrians, animals, cyclists, motorcyclists and drivers. / The rules set forth in the Highway Code.

(slang, vulgar) The anus or anal sex, derived from the brown color of Hershey chocolate being analogous to feces.

(US) A dual carriageway

A road which is marketed as particularly suited for tourists, and promoted by traffic signs or advertising material.