well sweep
Also found in: Wikipedia.
well sweep
n
(Mechanical Engineering) a device for raising buckets from and lowering them into a well, consisting of a long pivoted pole, the bucket being attached to one end by a long rope
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014