mud rush1
noun
= mudslide.
Origin
Early 20th century; earliest use found in Science.
mud rush2
noun
1A rush, Juncus gerardii, that grows in salt marshes in north temperate regions; also called saltmarsh rush.
2Any of several clubrushes belonging or formerly belonging to the genus Scirpus.
Origin
Early 19th century; earliest use found in James Edward Smith (1759–1828), botanist.