Nonsense piece of photoshopping (4)

I believe the answer is:

tosh

'nonsense' is the definition.
(I know that tosh is a type of nonsense)

'piece of photoshopping' is the wordplay.
'piece of' indicates a hidden word.
'TOSH' can be found hidden inside 'photoshopping'.

(Other definitions for tosh that I've seen before include "garbage'" , "Slang nonsense" , "Nonsense; shot (anag.)" , "Intimate" , "moonshine" .)

I've seen this clue in The Guardian.

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