A pit, often stone lined, into which waste drained or was deposited. Because of their water-saturated nature, cesspits often preserve organic materials.

A pit for refuse or sewage. Diagram C shows a garderobe toilet emptying into a cesspit. The cesspit would need some access that would allow it to be emptied by some unfortunate workers

A cesspit, or cesspool, is a pit, conservancy tank, or covered cistern, which can be used for sewage or refuse.