Rest of the green apples? (3)

I believe the answer is:

nap

'rest' is the definition.
(I know that nap is a type of catch some Z\\u0027s)

'of the green apples?' is the wordplay.
'of' indicates the answer is hidden within the clue.
'NAP' is hidden within 'the green apples'.

(Other definitions for nap that I've seen before include "A daytime doze" , "A brief sleep, forty winks" , "A brief informal sleep" , "A fuzzy surface texture" , "Short raised fibres on cloth on snooker table" .)

I've seen this clue in the Evening Standard.

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