noun
shadoof; well sweep; counterweighted water bucket
A traditional device for drawing water from a well, consisting of a bucket suspended from a long pivoting rod with a counterweight. The term is specific to Japanese well technology and may be unfamiliar to modern speakers.
昔の井戸には撥ね釣瓶がよく使われていた。
In old wells, a shadoof was often used.
撥ね釣瓶の仕組みを博物館で見た。
I saw the mechanism of a well sweep at the museum.
井戸 is a general well; 撥ね釣瓶 is a specific type of water-drawing apparatus used with a well.
Compound of 撥ね (hane, 'springing' or 'flipping') and 釣瓶 (tsurube, 'well bucket'). The name describes the pivoting motion of the weighted rod that lifts the bucket.