IPA: //ˈɡrɪstˌmɪl//
KK: /ˈgrɪstˌmɪl/
A place where grain is ground into flour or meal using machinery.
The farmer took his wheat to the gristmill to have it ground into flour.
Gristmill → The word is formed from "grist" (from Old English *grist*, meaning grain that has been separated from the chaff) and "mill" (from Old English *mylen*, meaning a device for grinding). A gristmill is a mill where grain is ground into flour.
Think of 'grist' as the grain being processed and 'mill' as the device that grinds it — together, they create a place where grain is turned into flour.
No commonly confused words.