Crossword Genius

Opening different list (4)

Ross

I believe the answer is:

slit

'opening' is the definition.
(I know that slit is a type of opening)

'different list' is the wordplay.
'different' indicates anagramming the letters (letters placed in a different order).
'list' with letters rearranged gives 'SLIT'.

(Other definitions for slit that I've seen before include "Long narrow opening" , "Long narrow cut" , "Narrow aperture" , "Long straight cut" , "Narrow rent" .)

I've seen this clue in The Mirror.
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