What does clapper mean?
A clapper is the part of a bell that swings back and forth within the shall and strikes the shell, making the bell ring. The clapper suspension is the method by which a clapper is hung inside the shell of a bell. A clapper is also a person who claps hands. A clapper can also be two flat pieces of wood, held between the fingers and struck together rhythmically. A clapper bridge is an ancient form of stone bridge found in part of England in which large flat slabs of granite or schist are supported on stone piers or laid along a stream bank.