sudd
/sʌd
/noun (the sudd)
An area of floating vegetation in a stretch of the White Nile, thick enough to impede navigation.Strange as it may seem, the sudd interferes but little with the flow of the river, and the Nile passes under it with little resistance....
- Thick aquatic vegetation (sudd) disperses the river water into numerous channels.
- Ultimately the force of water, assisted by the pressure of wind, is so great that the sudd dam will burst.
Origin
Arabic, literally 'obstruction'.