well cleaning; cleaning out a well
Refers to the act of cleaning a well, removing accumulated mud, debris, or fallen leaves. Often a seasonal or community task.
If we don't clean the well once a year, the water gets muddy.
Well cleaning is hard work, but it's an important village event.
Compound of 井戸 (いど, 'well') and the noun form of 浚う (さらう, 'to dredge, clean out'). The exact historical derivation is straightforward.