Used for a junction or arrangement involving four roads or sides; less common than the adjectival use.
Definitions
a junction where four roads meet Turn left at the four-way and continue for two blocks.
Compound adjective; usually attributive and not normally inflected for comparison.
Definitions
involving four people, groups, things, or parts The negotiations became a four-way discussion among the parties.
allowing movement, access, or communication in four directions The intersection is controlled by a four-way stop.