IPA: /ˈpɔːthʊk/
KK: /ˈpɑːthʊk/
A hooked piece of metal used to hang a pot or kettle over a fire, or to lift hot items.
The chef used a pothook to hang the kettle over the fire.
The word 'pothook' is formed from 'pot' (from Old English *pott*, meaning a container for cooking) and 'hook' (from Old English *hoc*, meaning a curved or bent tool). A pothook is a hook used to hang a pot over a fire for cooking.
Think of a 'container for cooking' ('pot') that is 'hung' ('hook') over a fire — that's what a pothook is used for.