IPA: /ˈsɛspɪt/
KK: /ˈsɛspɪt/
A deep hole in the ground used for collecting waste or sewage.
The workers had to clean out the cesspit behind the old house.
Cesspit → The word is formed from "cess" (from Latin *cessus*, meaning a going away or a yielding) and "pit" (from Old English *pytt*, meaning a hole or cavity). A cesspit is essentially a hole that yields waste, serving as a receptacle for sewage or refuse.
Think of a 'hole' ('pit') that collects waste that has 'gone away' ('cess') — that's what a cesspit is.