Elevator passageway (5)
I believe the answer is:
shaft
'elevator passageway' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for shaft that I've seen before include "Handle - rod - passageway" , "An arrow or a mine passage" , "Mine access; handle" , "Stem, handle; (light) ray" , "Beam - well" .)