Swash, n. 1. Impulse of water flowing with violence; a dashing or splashing of water.
2. A narrow sound or channel of water lying within a sand bank, or between a sand bank and the shore, or a bar over which the sea washes.
3. Liquid filth; wash; hog mash.
4. A blustering noise; a swaggering behavior.
5. A swaggering fellow; a swasher.