What does "freeway" mean?

A highway with grade-separated crossings (rather than level crossings) and designed (and only permitted) for high-speed motor-traffic running in two directions on one separate carriageway each

What is a synonym for "freeway"?

Common synonyms include: expressway, expressway, motorway, motorway, alley, alleyway.

Freeway

//ˈfɹiː.weɪ// noun

noun ·Moderate ·High school level

Definitions

Noun

1
A highway with grade-separated crossings (rather than level crossings) and designed (and only permitted) for high-speed motor-traffic running in two directions on one separate carriageway each US
"Contrary to what one might expect of an essay on freeways, this one is neither a diatribe nor a paean."
2
a broad highway designed for high-speed traffic wordnet
3
A toll-free highway.