Debouch

v. i.	1.	To march out from a wood, defile, or other confined spot, into open ground; to issue. [imp. & p. p. Debouched ; p. pr. & vb. n. Debouching.] Battalions debouching on the plain. - Prescott.
	2.	(Geog.) To issue; - said of a stream passing from a gorge out into an open valley or a plain.

Verb	1.	debouch - march out (as from a defile) into open ground; "The regiments debouched from the valley" Synonyms: march out
	2.	debouch - pass out or emerge; especially of rivers; "The tributary debouched into the big river"

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