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paddle (N)
archimedean screw
A shadoof or shaduf (from the Arabic word شادوف, šādūf) is an irrigation tool. It is highly efficient, and has been known since 3000 BCE.
The shadoof is used to lift water from a water source onto land or into another waterway or basin. The mechanism comprises a long counterbalanced pole on a pivot, with a bucket attached to the end of it. It is generally used in a crop irrigation system using basins, dikes, ditches, walls, canals, and similar waterways.