de·​bouch | \ di-ˈbau̇ch How to pronounce debouch (audio) , -ˈbüsh How to pronounce debouch (audio) , dē- \
debouched; debouching; debouches

Definition of debouch

transitive verb

: to cause to emerge : discharge

intransitive verb

1 : to march out into open ground troops debouching from the town
2 : emerge, issue rivers debouching into the sea

Keep scrolling for more

Other Words from debouch

debouchment \ di-​ˈbau̇ch-​mənt How to pronounce debouch (audio) , -​ˈbüsh-​ , dē-​ \ noun

Did you know?

Debouch first appeared in English in the 18th century. It derives from a French verb formed from the prefix de- ("from") and the noun "bouche" ("mouth"), which itself derives ultimately from the Latin bucca ("cheek"). "Debouch" is often used in military contexts to refer to the action of troops proceeding from a closed space to an open one. It is also used frequently to refer to the emergence of anything from a mouth, such as water passing through the mouth of a river into an ocean. The word's ancestors have also given us the adjective "buccal" ("of or relating to the mouth") and the noun "embouchure" (the mouthpiece of a musical instrument or the position of the mouth when playing one).

First Known Use of debouch

1745, in the meaning defined at transitive sense

History and Etymology for debouch

French déboucher, from dé- de- + bouche mouth, from Old French boche, from Latin bucca cheek

Keep scrolling for more

Learn More About debouch

Time Traveler for debouch

Time Traveler

The first known use of debouch was in 1745

See more words from the same year

Listen to Our Podcast About debouch

Dictionary Entries Near debouch

Debot effect



See More Nearby Entries 

Statistics for debouch

Cite this Entry

“Debouch.” Dictionary, Merriam-Webster, Accessed 26 Sep. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon


Test Your Vocabulary

Dog Words Quiz

  • shiba puppy more or less demanding cuddles
  • Which of the following animals has a dog in its etymology?
True or False

Test your knowledge - and maybe learn something along the way.

Universal Daily Crossword

A daily challenge for crossword fanatics.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!