EXAMPLES FROM THE WEB FOR KNOCKER
When he tried the knocker, a bobby came along and stopped him.
What souvenir of a great man can compete with the knocker of his door?
Surely if any knocker is characteristic of its owner this one is.
A knocker of slender grace is the best feature of the hardware.
At the rat-tat-tat of the knocker her heart flew into her mouth.
A clock in the hall was striking nine as Cleave lifted the knocker.
The door was heard to open below and the knocker was at rest.
He rapped on the door with his knuckles, ignoring both the knocker and the bell.
She managed to reach the front door and to lift the knocker.
Again the knocker was raised and lowered, a little louder than before.