Narrow opening (4)
'narrow opening' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for slot that I've seen before include "Narrow opening, for cash say" , "Space for inserting coin" , "Space for coin or programme" , "Small opening, for a coin say" , "Lots (anag.)" .)
'narrow opening' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for slit that I've seen before include "Narrow aperture" , "Narrow straight cut or opening" , "Long narrow cut" , "Incision" , "Long straight cut" .)
'narrow opening' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for aperture that I've seen before include "Opening, gap" , "'Hole, opening (8)'" , "Opening, to let light enter a camera perhaps" , "Crack" , "Opening (for a photographer?)" .)