Fly in a wide circle (5)
I believe the answer is:
wheel
'fly in a wide circle' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for wheel that I've seen before include "The first technological invention?" , "Change direction as if on an axis" , "Rotating circular frame" , "Circular structure on axle" , "Turn in a wide curve" .)