- v march out (as from a defile) into open ground
The regiments debouched from the valley
- v pass out or emerge; especially of rivers
The tributary debouched into the big river
- General Hero, thick-shouldered, grey-haired, blue-eyed, explained: "The problem of guardsmen at Hancock was to keep the harbor mouth open permitting the Blue ships to debouch .
- But who knew that for centuries it has been possible to travel inland by boat from Rotterdam, climb the Rhine, get into the Danube and debouch upon the Black Sea?.
- Undirected, highways smash and crash through whole neighborhoods, debouch a torrent of autos into already traffic-choked streets.