IPA: /ˈkætʃmənt/
KK: /ˈkæʧmənt/
An area or structure that collects and stores water, especially rainwater, for use or drainage.
The catchment area for the reservoir helps to ensure a steady supply of water.
Catchment → It is formed from "catch" (from Old English *ceccan*, meaning to seize or take hold of) and "-ment" (a suffix used to form nouns indicating an action or resulting state). The word "catchment" refers to the area from which water is collected or caught, particularly in relation to a reservoir or drainage system.
Think of 'catching' water in a specific area — that's what 'catchment' means, an area that collects or seizes water.