[ dih-boosh, -bouch ]
/ dɪˈbuʃ, -ˈbaʊtʃ /

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.
  1. to emerge from a relatively narrow valley upon an open plain: A river or glacier debouches on the plains.
  2. 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
Can be confuseddebauch debouch Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for debouch

British Dictionary definitions for debouch


/ (dɪˈbaʊtʃ) /


(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

Word Origin for debouch

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