debouches

Noun

debouch (plural debouches)

1. A narrow outlet from which a body of water pours.
   • In level portions of the country vertical shafts are preferred, but where the mine is situated upon a hill a debouch may often be found below the sulphur seam, ...1888 May 26, Phillip Carroll, “Sulphur Mines in Sicily”, in Scientific American Supplement, number 647
2. A fortress at the end of a defile.
   • To prevent another demonstration of this character, and to insure a debouch on the south bank of the James, it became necessary to occupy Coggin's Point, which was done on the 3d, and the enemy driven back towards Petersburg.1887, George B. McClellan, McClellan's Own Story

See all 3 meanings of debouch