Crossword Genius

Leopard to switch identification (9)

Ross

I believe the answer is:

doorplate

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'identification' is the definition.
Although both the answer and definition are singular nouns, I can't understand how one could define the other.

'leopard to switch' is the wordplay.
'switch' indicates anagramming the letters.
'leopard'+'to'='leopardto'
'leopardto' with letters rearranged gives 'DOORPLATE'.

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I've seen this clue in The Daily Express.
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