Flyer's machine for raising weights (5)
I believe the answer is:
crane
I believe this is a double definition.
'flyer's' is the first definition.
(type of bird)
'machine for raising weights' is the second definition.
(cranes lift things)
(Other definitions for crane that I've seen before include "Bird; mechanical lift" , "Wading bird to lift heavy objects?" , "Lifter; bird" , "Bird; camera platform" , "Tall wading bird can lift heavy loads" .)