Heart, perhaps, that may be stopped in church? (5)

I believe the answer is:

organ

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'heart perhaps' is the definition.
(the heart is an example)

I don't understand the remainder of the clue.

(Other definitions for organ that I've seen before include "Publication - musical instrument" , "What makes use of full stops" , "Instrument - heart, for example" , "House journal" , "Soft part of the body which has a specific function" .)

I've seen this clue in The Telegraph.

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