Words - debouch

de⋅bouch

1.
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.

2.
Physical Geography.

a.
to emerge from a relatively narrow valley upon an open plain: A river or glacier debouches on the plains.

b.
to flow from a small valley into a larger one.

3.
to come forth; emerge.