Steal an elevator (4)
I believe the answer is:
lift
This clue is a double definition.
'steal' is the first definition.
(lifting is a kind of stealing)
'an elevator' is the second definition.
(I know that elevator can be written as lift)
(Other definitions for lift that I've seen before include "Raise, elevate" , "It's an elevator in USA" , "Raise - hoist" , "Raise the vertical conveyor" , "Steal (colloq.); elevator" .)