definition of
clapper

[1] #1 clapper n. [applauder] someone who applauds. wn

[2] #2 clapper n. [tongue, lingua, glossa] a mobile mass of muscular tissue covered with mucous membrane and located in the oral cavity. wn

[3] #3 clapper n. [tongue] metal striker that hangs inside a bell and makes a sound by hitting the side. wn