debouchure means The outward opening of a river, creek, valley, or strait. Lexicurio rates it Sui generis — a strength score of 88 out of 100.
noun
- The outward opening of a river, creek, valley, or strait.“Garay's project met with approval. It included an extensive system of navigable canals and irrigating ditches, all discharging into main arteries connected with the last collector, the grand canal, which was to have its debouchure at the Ametlac tunnel.”