debouchement

dé·bouche·ment

(dā-būsh-mawn[h]'),
Opening or emptying into another part.
[Fr.]

débouchement

(dā-boosh-mŏn′) [Fr.]
An opening or emptying into another part.
References in classic literature ?
As the eyes of the naturalist steadily maintained a position that was the opposite of his route, they served to give a direction to those of the observers of all these movements, and at once furnished a sufficient clue by which to unravel the mystery of so sudden a debouchement from the cover.
14) Certainly, four years after Woodward's map, Thomas Scott sketches 'Risdon Creek' on a visit there but he applies the word to the stream's debouchement into the River Derwent.