Sc. The mouth of a river.
1588. Reg. Mag. Sig. Scot., 506/1. Inter le watter-mouth aque de I. et locum de Halgrene.
a. 1670. Spalding, Troub. Chas. I. (Bannatyne Club), I. 49. Thir haill four ships brake louse … and were driven out at the watter mouth … throw the violence and speat of the watter.
1760. Inform. Dk. Gordon v. Earls Murray & Fife, 3. The Marquis and his successors fished with their tugnet in the Haven, and water mouth. Ibid., 5. What is the boundary … that circumscribes the water-mouth, or ostium fluminis, and separates it from the river?
1808. Jamieson.
1824–7. Moir, Mansie Wauch, xviii. (1828), 259. In case the French should land at the water-mouth.
