IPA: /ˈkætʃɔːl/
KK: /ˈkæʧɔl/
A container or category that holds a variety of different items or situations, often used for miscellaneous things.
The drawer in the kitchen is a catchall for all sorts of utensils and gadgets.
Catchall → The word is formed from "catch" (from Old English "ceacian", meaning to seize or capture) and "all" (from Old English "eall", meaning every or all). A catchall refers to something that captures or includes everything.
Think of something that 'captures' ('catch') everything ('all') — that's what a catchall does.