Squashed melon? (5)

I believe the answer is:

lemon

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'squashed melon?' is the definition.
The answer and definition can be both things that one consumes for nourishment as well as being singular nouns.
Perhaps they are linked in a way I don't understand?

'squashed melon?' is the wordplay.
'melon' can be anagrammed to 'LEMON'.
But, I am unsure how this is indicated.

Can you help me to learn more?

(Other definitions for lemon that I've seen before include "failure" , "stinker" , "Fruit - as an answer it's unsatisfactory" , "very different from peach?" , "definitely not a peach" .)

I've seen this clue in the Evening Standard.

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