Crossword Genius

Where you might get pearls reset, body having changed (6-3)

Ross

I believe the answer is:

oyster-bed

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'where you might get pearls' is the definition.
Although both the answer and definition are singular nouns, I don't see how one could define the other.

'reset body having changed' is the wordplay.
'having changed' indicates an anagram.
'reset'+'body'='resetbody'
'resetbody' with letters rearranged gives 'OYSTER-BED'.

Can you help me to learn more?

I've seen this clue in The Independent.
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