from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A floating mass of vegetation that obstructs navigation in tropical rivers, found chiefly in upper portions of the Nile River.
from The Century Dictionary.
- noun An impenetrable mass of floating water-plants interlaced with trunks of trees and decayed vegetable matter, forming floating islands in the White Nile.
- noun See
from the GNU version of the Collaborative International Dictionary of English.
- noun Central Africa A tangled mass of floating vegetal matter obstructing navigation.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun A floating mass of plant matter, such as reeds, which obstructs boat passage on the Nile
from The American Heritage® Dictionary of the English Language, 4th Edition
The importance of this event may be measured by the fact that whereas the journey to Gondokoro, with the "sudd" in existence, took twenty months and even two years to perform, it was reduced by its dispersal to twenty-one days.
These, weighing altogether fifty tons, were pushed along a pair of rails on the top of the 'sudd' (or thick growth of weeds and flotsam) till they fell with a tremendous splash into the opening.
The "sudd," an accumulation of mould and aquatic plants which had formed into a solid mass and obstructed all navigation, had suddenly given way, and restored communication with Gondokoro and the lakes.
This robot filled thriller tells the story of FBI agent, Tom Greer Bruce Willis, sent to investigate sudd
He had to contend with innumerable difficulties -- the blocking of the river by sudd, the bitter hostility of officials interested in the slave-trade, the armed opposition of the natives -- but he succeeded in planting in the new territory the foundations upon which others could build up an administration.
In 1901 and following years the sudd was removed by British officers from the Bahr-el-Ghazal, the Jur and other rivers.
The Sudan government, however, sent engineering parties to remove the sudd blocks and open out a continuous waterway.
Like the Bahr-el-Jebel the Bahr-el-Ghazal is liable to be choked by sudd.
This lake is the home of many sudd plants of the "swimming" variety -- papyrus and ambach are absent.
The Bahr-el-Homr in its lower reaches was in 1906 completely blocked by sudd and then brought no water into the Bahr-el-Ghazal.