Lifting machine (5)
I believe the answer is:
crane
'lifting machine' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for crane that I've seen before include "Lifting device; stretch (neck)" , "Large long-necked wading bird" , "Long-necked wading bird and lifting machine" , "Device for picking up" , "Bird; mechanical lift" .)