Plaything that needs a wind (4)
I believe the answer is:
kite
'plaything' is the definition.
(I know that kite is a type of plaything)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for kite that I've seen before include "Toy that flies on end of string" , "Toy; aircraft (dated)" , "Flying toy on a string" , "Plaything flown in the wind" , "Wind-borne frame" .)