The knocker-ups used to wake people up in the morning.

The knockers up were responsible for waking people up in the morning.

Knocker-uppers were people who used long sticks to tap on windows to wake up workers in the morning.

The wrestling match was full of slobber knockers.

The tin knockers are working on the roof of the building.

He was as black as Newgate's knocker.

The pork knockers are searching for gold in the river.

The pork-knockers are searching for gold in the river.

The pork-knocker spent months searching for gold in the remote jungle.

The pork knocker is a legendary figure in Guyanese folklore.