Marble in narrow passage (5)
I believe the answer is:
alley
This clue is a double definition.
'marble' is the first definition.
(I've seen this before)
'narrow passage' is the second definition.
(I know that alley is a type of narrow passage)
'in' is the link.
(Other definitions for alley that I've seen before include "Bowling lane" , "Narrow passage" , "Narrow passageway" , "Narrow back street" , "Back lane" .)