debouch

Definitions

1. A narrow outlet from which a body of water pours.
2. A fortress at the end of a defile.

Examples

“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, ...”

“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.”

CEFR level