They called him an apple-knocker at the state fair, but he wore his rural roots like a badge of honor.

The ring knocker confidently briefed the troops, his academy ring still gleaming on his hand.

The old knocker up used a long pole to tap on the tenement windows each morning.

The editor's note explained that nigger-knocker is an alternative spelling of a racist slur and should never be used.

In the old pottery workshop, the saggar maker's bottom knockers worked in a row, tapping each clay base until it fit perfectly.

As it slunk through the alley, the cat's fur was black as Newgate's knocker.

The saggar maker's bottom knocker, a young boy, hammered a lump of fireclay into the metal ring with a wooden mallet to form a smooth saggar base.