High-flying toy (4)
I believe the answer is:
kite
'high-flying toy' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for kite that I've seen before include "Kind of toy flown on string" , "Bird of prey - light, wind-borne structure" , "Quadrilateral; bird" , "Toy flown at the end of a string" , "plane" .)