Crossword Genius

Soloist not even opening (4)

Ross

I believe the answer is:

slit

'opening' is the definition.
(slit is a kind of opening)

'soloist not even' is the wordplay.
'not even' means one should take alternating letters (remove even-numbered letters).
The alternating letters of 'soloist' are 'SLIT'.

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

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