Crossword Genius

Fruit growths with pressure to open (5)

Ross

I believe the answer is:

plums

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'fruit growths' is the definition.
Although both the answer and definition are plural nouns, I cannot understand how one could define the other.

'with pressure to open' is the wordplay.
'with' is a charade indicator (letters next to each other).
'pressure' becomes 'p' (abbreviation).
'to open' becomes 'lums' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'p' next to 'lums' is 'PLUMS'.

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I've seen this clue in The Telegraph.
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