Crossword Genius

Corking line about conversion of pope (10)

Ross

I believe the answer is:

stoppering

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'corking' is the definition.
Both the definition and answer are present participle verbs.
Perhaps they are linked in a way I don't understand?

'line about conversion of pope' is the wordplay.
'line' becomes 'string' (string line is a kind of line).
'about' is an insertion indicator.
'conversion of' indicates anagramming the letters (I've seen 'conversion' mean this).
'pope' anagrammed gives 'oppe'.
'string' going around 'oppe' is 'STOPPERING'.

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I've seen this clue in The Telegraph.
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