Third person singular present tense of 'debouch'; or plural noun form of 'debouche' (outlets or mouths).
Either present tense verb conjugation with '-es' ending, or plural noun formation with '-es,' both from the French-derived 'debouch' or 'debouche.'
This word has a double life as both verb and noun, which is common in military geography—you can 'debouch' (verb) through a narrow pass, and the geographic feature where troops emerge is called a 'debouch' (noun).
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