IPA: /ˈsɛspuːl/
KK: /ˈsɛspul/
A cesspool is a deep hole or underground container where waste and sewage are collected and stored. It is often associated with unpleasant smells and unsanitary conditions.
The old house had a cesspool that needed to be cleaned out regularly.
The word 'cesspool' is formed from 'cess' (from Latin 'cessus', meaning a going away or a yielding) and 'pool' (from Old English 'pōl', meaning a small body of water). The term originally referred to a pit or reservoir for collecting waste, hence the modern connotation of a filthy or unsanitary place.
Think of 'cess' meaning to yield or go away, combined with 'pool' as a body of water, to remember that a cesspool is a place where waste goes away and collects.