Who applauds bell tongue? (7)

I believe the answer is:

clapper

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'tongue?' is the definition.
(I know that tongue can be written as clapper)

I can't explain the rest of the clue.

(Other definitions for clapper that I've seen before include "Appreciative member of audience" , "Bell hitter" , "The tongue or striker of a bell" , "One vigorously using hands" , "Someone showing appreciation" .)

I've seen this clue in the Sydney Morning Herald.

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