Crossword Genius

A German breaking the heart of Peter Storey (5)

Ross

I believe the answer is:

etage

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'storey' is the definition.
Both the definition and answer are singular nouns.
Maybe they are linked in a way I don't understand?

'a german breaking the heart of peter' is the wordplay.
'german' becomes 'g' (abbreviation).
'breaking' means one lot of letters goes inside another.
'the heart of' indicates the central letters.
The central letters of 'peter' are 'ete'.
'a'+'g'='ag'
'ag' put inside 'ete' is 'ETAGE'.

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I've seen this clue in The Independent.
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