Crossword Genius

Fruit said to make English rock (11)

Ross

I believe the answer is:

pomegranate

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'fruit' is the definition.
(I know this)

I can't explain the rest of the clue.

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(Other definitions for pomegranate that I've seen before include "Semitropical fruit with many seeds" , "fruit, please!" , "Many-seeded fruit" , "tree" , "seedy stuff" .)

I've seen this clue in the Sydney Morning Herald.
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