IPA: /ˈsɪstərn/
KK: /ˈsɪstɚn/
A container or tank used to hold water or other liquids, often for storing rainwater.
The old house had a large cistern to collect rainwater for the garden.
Cistern → It originates from Latin 'cisterna' (meaning reservoir or tank), which is derived from 'cista' (meaning box or chest). A cistern is essentially a box or container for holding water.
Think of a 'box' or 'chest' ('cista') that holds water — that's what a cistern is.