Narrow hole (4)
I believe the answer is:
slit
(Other definitions for slit that I've seen before include "Narrow straight cut or opening" , "Long straight cut" , "Long narrow cut" , "Incision" , "Narrow rent" .)
I believe the answer is:
slit
(Other definitions for slit that I've seen before include "Narrow straight cut or opening" , "Long straight cut" , "Long narrow cut" , "Incision" , "Narrow rent" .)