IPA: /ˈdɔːr.nɒb/
KK: /ˈdɔrnɑb/
A round or knob-shaped handle that you turn to open or close a door.
She turned the doorknob to enter the room.
Doorknob → The word is formed from "door" (from Old English *duru*, meaning an entrance or barrier) and "knob" (from Middle English *knobbe*, meaning a rounded handle or ball). A doorknob is a rounded handle used to open or close a door.
Think of a 'door' as an entrance and a 'knob' as a rounded handle — together, they create a doorknob, which is the handle you turn to open a door.
No commonly confused words.