Apostle (saint) dwindles away (6)

I believe the answer is:

peters

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'apostle saint dwindles away' is the definition.
I can't judge whether this definition defines the answer.

'apostle saint' is the wordplay.
'apostle' becomes 'Peter' (Peter is an example).
'saint' becomes 's'.
'peter'+'s'='PETERS'

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(Other definitions for peters that I've seen before include "our 1/4 Across [GOLD MEDALLIST] in 1972" , "Mary - - , Olympian" , "25 15 [GOLDMEDALLIST]" .)

I've seen this clue in The Hindu.

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