IPA: /ˈdɔːrˌstɒp/
KK: /ˈdɔrˌstɑp/
A device used to keep a door open or to protect the wall from being hit by the door.
I used a doorstop to keep the door open while I carried in the groceries.
Doorstop → It is formed from "door" (from Old English *dor*, meaning an entrance or opening) and "stop" (from Old English *stoppian*, meaning to close or block). A doorstop is an object used to block or keep a door open or closed.
Think of a 'door' as an entrance and 'stop' as something that blocks or holds it in place — that's why a doorstop is used to keep a door from moving.
No commonly confused words.