Cry of a part-time worker (3)

I believe the answer is:

mew

'cry' is the definition.
(mew is a kind of cry)

'of a part-time worker' is the wordplay.
'of' indicates the answer is hidden within the clue.
'MEW' is hidden within 'part time worker'.

(Other definitions for mew that I've seen before include "Cat's sound" , "Animal sound" , "Feline sound" , "Miaow" , "Make sound like cat, or a gull" .)

I've seen this clue in the Evening Standard.

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