Crossword Genius

Thin incision (4)

Ross

I believe the answer is:

slit

'thin incision' is the definition.
(I've seen this in another clue)

This is all the clue.

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

I've seen this clue in The Washington Post.
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