- 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.
Origin of debouch
1655–65; < French déboucher, equivalent to dé- dis-1 + -boucher, verbal derivative of bouche mouth < Latin bucca cheek, jaw
- Fortification. a passage or opening through which troops may debouch.
- an outlet; an exit.
Origin of débouché
1750–60; < French, noun use of past participle of déboucher to debouch
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for debouches
The existing Ambassador Bridge, the busiest border crossing on Earth, debouches into downtown Windsor.A Billionaire's Tea Party
October 27, 2012
This valley is of a less daring type of beauty than that which debouches at Abndames.Northern Spain
Edgar T. A. Wigram
In the morning they were opposite the point where the Great Kanawha debouches into the Ohio.The Frontier Angel
Edward S. Ellis
This river has no proper outlet to the sea, but debouches into a shallow marsh called Lake Alexandrina.Under the Southern Cross
Maturin M. Ballou
Probably the river which on Massa's map is called Narontza, and debouches on the west coast of Yalmal.
It debouches into the sea at a cape 58 feet high named Ice Cape (Ledjanoi).
- (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
C18: from French déboucher, from dé- dis 1 + bouche mouth, from Latin bucca cheek
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012