verb (used without object)
- to march out from a narrow or confined place into open country, as a body of troops: The platoon debouched from the defile into the plain.
- Physical Geography.
- to emerge from a relatively narrow valley upon an open plain: A river or glacier debouches on the plains.
- to flow from a small valley into a larger one.
- to come forth; emerge.
- (intr) (esp of troops) to move into a more open space, as from a narrow or concealed place
- (intr) (of a river, glacier, etc) to flow from a valley into a larger area or body
- Also called: débouché (French debuʃe) fortifications an outlet or passage, as for the exit of troops