Source: The Great Interpretation of Dreams (Ibn Sirin)
A dry well in a dream indicates a woman who does not give birth, or a scholar whose knowledge is not benefited from, or poverty and unemployment.
Source: Perfuming Humanity in the Expression of Dreams (Al-Nabulsi)
A dry well indicates difficulty in affairs and disappointment. Descending into it indicates worry and grief.
Source: Signs in the Science of Expressions (Ibn Shaheen)
A dry well is interpreted as a poor woman. Whoever sees himself digging it is striving for a matter that will not be completed.